diff --git a/01-project-introduction.html b/01-project-introduction.html
index 613a51e0..0beaf43b 100644
--- a/01-project-introduction.html
+++ b/01-project-introduction.html
@@ -315,7 +315,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Introduction to R and RStudio</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/01-project-introduction.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -742,8 +742,8 @@ <h3 id="version-control">Version Control<a class="anchor" aria-label="anchor" hr
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/01-project-introduction.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/01-project-introduction.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/02-data-visualisation.html b/02-data-visualisation.html
index c162e52f..061d0b33 100644
--- a/02-data-visualisation.html
+++ b/02-data-visualisation.html
@@ -311,7 +311,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Visualisation with ggplot2</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/02-data-visualisation.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1194,8 +1194,8 @@ <h2 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/02-data-visualisation.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/02-data-visualisation.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/03-data-subsetting.html b/03-data-subsetting.html
index 65f35e80..56bd391b 100644
--- a/03-data-subsetting.html
+++ b/03-data-subsetting.html
@@ -311,7 +311,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Subsetting data with dplyr</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/03-data-subsetting.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -510,7 +510,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb8">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -558,7 +558,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb10">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -713,7 +713,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb18">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -761,7 +761,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb20">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -808,7 +808,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb22">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -976,7 +976,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb34">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1024,7 +1024,7 @@ <h3 class="callout-title">Challenge 7<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb36">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1141,7 +1141,7 @@ <h3 class="callout-title">Challenge 8<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
   <h4 class="accordion-header" id="headingSolution8">Show me the solution</h4>
 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
+<div id="collapseSolution8" class="accordion-collapse collapse" aria-labelledby="headingSolution8" data-bs-parent="#accordionSolution8">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb42">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1189,7 +1189,7 @@ <h3 class="callout-title">Challenge 9<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution9" aria-expanded="false" aria-controls="collapseSolution9">
   <h4 class="accordion-header" id="headingSolution9">Show me the solution</h4>
 </button>
-<div id="collapseSolution9" class="accordion-collapse collapse" data-bs-parent="#accordionSolution9" aria-labelledby="headingSolution9">
+<div id="collapseSolution9" class="accordion-collapse collapse" aria-labelledby="headingSolution9" data-bs-parent="#accordionSolution9">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb44">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1304,7 +1304,7 @@ <h3 class="callout-title">Challenge 10<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution10" aria-expanded="false" aria-controls="collapseSolution10">
   <h4 class="accordion-header" id="headingSolution10">Show me the solution</h4>
 </button>
-<div id="collapseSolution10" class="accordion-collapse collapse" data-bs-parent="#accordionSolution10" aria-labelledby="headingSolution10">
+<div id="collapseSolution10" class="accordion-collapse collapse" aria-labelledby="headingSolution10" data-bs-parent="#accordionSolution10">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb52">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1355,7 +1355,7 @@ <h3 class="callout-title">Challenge 11<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution11" aria-expanded="false" aria-controls="collapseSolution11">
   <h4 class="accordion-header" id="headingSolution11">Show me the solution</h4>
 </button>
-<div id="collapseSolution11" class="accordion-collapse collapse" data-bs-parent="#accordionSolution11" aria-labelledby="headingSolution11">
+<div id="collapseSolution11" class="accordion-collapse collapse" aria-labelledby="headingSolution11" data-bs-parent="#accordionSolution11">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb54">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1445,7 +1445,7 @@ <h3 class="callout-title">Challenge 12<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution12" aria-expanded="false" aria-controls="collapseSolution12">
   <h4 class="accordion-header" id="headingSolution12">Show me the solution</h4>
 </button>
-<div id="collapseSolution12" class="accordion-collapse collapse" data-bs-parent="#accordionSolution12" aria-labelledby="headingSolution12">
+<div id="collapseSolution12" class="accordion-collapse collapse" aria-labelledby="headingSolution12" data-bs-parent="#accordionSolution12">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb58">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1548,8 +1548,8 @@ <h1 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/03-data-subsetting.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/03-data-subsetting.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/04-data-sorting-pipes.html b/04-data-sorting-pipes.html
index dbeab3ce..2aec6880 100644
--- a/04-data-sorting-pipes.html
+++ b/04-data-sorting-pipes.html
@@ -312,7 +312,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data sorting and pipes dplyr</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/04-data-sorting-pipes.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -453,7 +453,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb6">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -647,7 +647,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb17">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -764,7 +764,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb23">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -814,7 +814,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb25">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -866,7 +866,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb27">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -981,7 +981,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb33">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1112,8 +1112,8 @@ <h1 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/04-data-sorting-pipes.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/04-data-sorting-pipes.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/05-data-plotting-scales.html b/05-data-plotting-scales.html
index 0048db02..63ecd878 100644
--- a/05-data-plotting-scales.html
+++ b/05-data-plotting-scales.html
@@ -308,7 +308,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data visualisation and scales</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/05-data-plotting-scales.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -391,7 +391,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button hint-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseHint1" aria-expanded="false" aria-controls="collapseHint1">
   <h4 class="accordion-header" id="headingHint1">Give me a hint</h4>
 </button>
-<div id="collapseHint1" class="accordion-collapse collapse" data-bs-parent="#accordionHint1" aria-labelledby="headingHint1">
+<div id="collapseHint1" class="accordion-collapse collapse" aria-labelledby="headingHint1" data-bs-parent="#accordionHint1">
 <div class="accordion-body">
 <p>Try geom_boxplot</p>
 </div>
@@ -403,7 +403,7 @@ <h4 class="accordion-header" id="headingHint1">Give me a hint</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb2">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -454,7 +454,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Learning the difference between using <code>fill</code> and
 <code>colour</code>/<code>color</code> can take a little time, but in
@@ -542,7 +542,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>“coral” and “cyan” are built in colour names, that you can call
 directly. There are lots of these names, <a href="https://www.datanovia.com/en/blog/awesome-list-of-657-r-color-names/" class="external-link">datanovia</a>
@@ -579,7 +579,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>hexidecimal colour codes are often use in webdesign, and are a way of
 coding red, blue and green. To explore colours in hexidecmial, there are
@@ -616,7 +616,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <p>The order you provide the manual colours dictate which category gets
 which colour.</p>
@@ -654,7 +654,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <p>There is not single answer here, there are many different options.
 The key difference between what we did before and this, is that the
@@ -742,7 +742,7 @@ <h3 class="callout-title">Challenge 7<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <p>The classic theme is one often wanted by strict and old-school
 journals. Its very handy to have a short-cut to it.</p>
@@ -784,7 +784,7 @@ <h3 class="callout-title">Challenge 8<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
   <h4 class="accordion-header" id="headingSolution8">Show me the solution</h4>
 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
+<div id="collapseSolution8" class="accordion-collapse collapse" aria-labelledby="headingSolution8" data-bs-parent="#accordionSolution8">
 <div class="accordion-body">
 <p>The void theme strips all axis and background, leaving the plot
 alone. This is generally not a meaningful theme to use for publication,
@@ -885,8 +885,8 @@ <h1 id="wrap-up">Wrap up<a class="anchor" aria-label="anchor" href="#wrap-up"></
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/05-data-plotting-scales.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/05-data-plotting-scales.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/06-data-manipulation.html b/06-data-manipulation.html
index 5b0e669b..a472a3eb 100644
--- a/06-data-manipulation.html
+++ b/06-data-manipulation.html
@@ -308,7 +308,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data manipulation with dplyr</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/06-data-manipulation.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1077,8 +1077,8 @@ <h1 id="wrap-up">Wrap up<a class="anchor" aria-label="anchor" href="#wrap-up"></
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/06-data-manipulation.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/06-data-manipulation.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/07-data-reshaping.html b/07-data-reshaping.html
index 0cd2c98a..5c758242 100644
--- a/07-data-reshaping.html
+++ b/07-data-reshaping.html
@@ -309,7 +309,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Reshaping data with tidyr</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/07-data-reshaping.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -468,7 +468,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb5">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -517,7 +517,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb7">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -566,7 +566,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb9">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -692,7 +692,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb15">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -745,7 +745,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb17">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -798,7 +798,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb19">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1074,7 +1074,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb34">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1257,8 +1257,8 @@ <h1 id="wrap-up">Wrap up<a class="anchor" aria-label="anchor" href="#wrap-up"></
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/07-data-reshaping.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/07-data-reshaping.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/08-data-summaries.html b/08-data-summaries.html
index a2736003..41d2469a 100644
--- a/08-data-summaries.html
+++ b/08-data-summaries.html
@@ -301,7 +301,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data summaries with dplyr</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/08-data-summaries.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -486,7 +486,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb12">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -530,7 +530,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb14">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -727,7 +727,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb28">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -773,7 +773,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb30">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -938,7 +938,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb41">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1133,7 +1133,7 @@ <h3 class="callout-title">Challenge 7<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb53">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1182,7 +1182,7 @@ <h3 class="callout-title">Challenge 8<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb55">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1291,8 +1291,8 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/08-data-summaries.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/08-data-summaries.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/09-data-complex-pipelines.html b/09-data-complex-pipelines.html
index b65987ee..b42e4fd0 100644
--- a/09-data-complex-pipelines.html
+++ b/09-data-complex-pipelines.html
@@ -301,7 +301,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Complex data pipelines</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/09-data-complex-pipelines.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1419,8 +1419,8 @@ <h2 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/09-data-complex-pipelines.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/09-data-complex-pipelines.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/10-data-manipulation-across.html b/10-data-manipulation-across.html
index 9cedeae9..5cb500aa 100644
--- a/10-data-manipulation-across.html
+++ b/10-data-manipulation-across.html
@@ -310,7 +310,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data manipulation across columns</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/10-data-manipulation-across.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -941,8 +941,8 @@ <h3 id="learning-more">Learning more<a class="anchor" aria-label="anchor" href="
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/10-data-manipulation-across.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/10-data-manipulation-across.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/404.html b/404.html
index 5f37b9e3..4ba9de68 100644
--- a/404.html
+++ b/404.html
@@ -366,7 +366,7 @@ <h1>Page not found</h1>
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/404.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/404.html",
-  "dateCreated": "2024-05-08",
+  "dateCreated": "2024-06-04",
   "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
diff --git a/CODE_OF_CONDUCT.html b/CODE_OF_CONDUCT.html
index a4629466..58d7361a 100644
--- a/CODE_OF_CONDUCT.html
+++ b/CODE_OF_CONDUCT.html
@@ -297,7 +297,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Contributor Code of Conduct</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/CODE_OF_CONDUCT.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -379,8 +379,8 @@ <h1>Contributor Code of Conduct</h1>
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/CODE_OF_CONDUCT.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/CODE_OF_CONDUCT.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/LICENSE.html b/LICENSE.html
index 95bba423..86be423b 100644
--- a/LICENSE.html
+++ b/LICENSE.html
@@ -297,7 +297,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Licenses</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/LICENSE.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -431,8 +431,8 @@ <h1>Licenses</h1>
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/LICENSE.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/LICENSE.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/aio.html b/aio.html
index 51053c07..70ba7c65 100644
--- a/aio.html
+++ b/aio.html
@@ -356,7 +356,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
         
 <section id="aio-01-project-introduction"><p>Content from <a href="01-project-introduction.html">Introduction to R and RStudio</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/01-project-introduction.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -778,7 +778,7 @@ <h3 id="version-control">Version Control<a class="anchor" aria-label="anchor" hr
 </div>
 </section></section><section id="aio-02-data-visualisation"><p>Content from <a href="02-data-visualisation.html">Visualisation with ggplot2</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/02-data-visualisation.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -1620,7 +1620,7 @@ <h2 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
 </div>
 </div></section><section id="aio-03-data-subsetting"><p>Content from <a href="03-data-subsetting.html">Subsetting data with dplyr</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/03-data-subsetting.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -1823,7 +1823,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb8">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1871,7 +1871,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb10">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2031,7 +2031,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb18">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2079,7 +2079,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb20">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2126,7 +2126,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb22">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2295,7 +2295,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb34">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2343,7 +2343,7 @@ <h3 class="callout-title">Challenge 7<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb36">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2461,7 +2461,7 @@ <h3 class="callout-title">Challenge 8<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
   <h4 class="accordion-header" id="headingSolution8">Show me the solution</h4>
 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
+<div id="collapseSolution8" class="accordion-collapse collapse" aria-labelledby="headingSolution8" data-bs-parent="#accordionSolution8">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb42">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2509,7 +2509,7 @@ <h3 class="callout-title">Challenge 9<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution9" aria-expanded="false" aria-controls="collapseSolution9">
   <h4 class="accordion-header" id="headingSolution9">Show me the solution</h4>
 </button>
-<div id="collapseSolution9" class="accordion-collapse collapse" data-bs-parent="#accordionSolution9" aria-labelledby="headingSolution9">
+<div id="collapseSolution9" class="accordion-collapse collapse" aria-labelledby="headingSolution9" data-bs-parent="#accordionSolution9">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb44">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2625,7 +2625,7 @@ <h3 class="callout-title">Challenge 10<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution10" aria-expanded="false" aria-controls="collapseSolution10">
   <h4 class="accordion-header" id="headingSolution10">Show me the solution</h4>
 </button>
-<div id="collapseSolution10" class="accordion-collapse collapse" data-bs-parent="#accordionSolution10" aria-labelledby="headingSolution10">
+<div id="collapseSolution10" class="accordion-collapse collapse" aria-labelledby="headingSolution10" data-bs-parent="#accordionSolution10">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb52">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2676,7 +2676,7 @@ <h3 class="callout-title">Challenge 11<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution11" aria-expanded="false" aria-controls="collapseSolution11">
   <h4 class="accordion-header" id="headingSolution11">Show me the solution</h4>
 </button>
-<div id="collapseSolution11" class="accordion-collapse collapse" data-bs-parent="#accordionSolution11" aria-labelledby="headingSolution11">
+<div id="collapseSolution11" class="accordion-collapse collapse" aria-labelledby="headingSolution11" data-bs-parent="#accordionSolution11">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb54">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2767,7 +2767,7 @@ <h3 class="callout-title">Challenge 12<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution12" aria-expanded="false" aria-controls="collapseSolution12">
   <h4 class="accordion-header" id="headingSolution12">Show me the solution</h4>
 </button>
-<div id="collapseSolution12" class="accordion-collapse collapse" data-bs-parent="#accordionSolution12" aria-labelledby="headingSolution12">
+<div id="collapseSolution12" class="accordion-collapse collapse" aria-labelledby="headingSolution12" data-bs-parent="#accordionSolution12">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb58">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2812,7 +2812,7 @@ <h1 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
  -->
 </div></section><section id="aio-04-data-sorting-pipes"><p>Content from <a href="04-data-sorting-pipes.html">Data sorting and pipes dplyr</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/04-data-sorting-pipes.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -2953,7 +2953,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb6">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3148,7 +3148,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb17">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3266,7 +3266,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb23">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3316,7 +3316,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb25">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3368,7 +3368,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb27">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3486,7 +3486,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb33">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3559,7 +3559,7 @@ <h1 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
  -->
 </div></section><section id="aio-05-data-plotting-scales"><p>Content from <a href="05-data-plotting-scales.html">Data visualisation and scales</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/05-data-plotting-scales.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -3642,7 +3642,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button hint-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseHint1" aria-expanded="false" aria-controls="collapseHint1">
   <h4 class="accordion-header" id="headingHint1">Give me a hint</h4>
 </button>
-<div id="collapseHint1" class="accordion-collapse collapse" data-bs-parent="#accordionHint1" aria-labelledby="headingHint1">
+<div id="collapseHint1" class="accordion-collapse collapse" aria-labelledby="headingHint1" data-bs-parent="#accordionHint1">
 <div class="accordion-body">
 <p>Try geom_boxplot</p>
 </div>
@@ -3654,7 +3654,7 @@ <h4 class="accordion-header" id="headingHint1">Give me a hint</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb2">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3707,7 +3707,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Learning the difference between using <code>fill</code> and
 <code>colour</code>/<code>color</code> can take a little time, but in
@@ -3797,7 +3797,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>“coral” and “cyan” are built in colour names, that you can call
 directly. There are lots of these names, <a href="https://www.datanovia.com/en/blog/awesome-list-of-657-r-color-names/" class="external-link">datanovia</a>
@@ -3835,7 +3835,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>hexidecimal colour codes are often use in webdesign, and are a way of
 coding red, blue and green. To explore colours in hexidecmial, there are
@@ -3873,7 +3873,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <p>The order you provide the manual colours dictate which category gets
 which colour.</p>
@@ -3912,7 +3912,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <p>There is not single answer here, there are many different options.
 The key difference between what we did before and this, is that the
@@ -4002,7 +4002,7 @@ <h3 class="callout-title">Challenge 7<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <p>The classic theme is one often wanted by strict and old-school
 journals. Its very handy to have a short-cut to it.</p>
@@ -4045,7 +4045,7 @@ <h3 class="callout-title">Challenge 8<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
   <h4 class="accordion-header" id="headingSolution8">Show me the solution</h4>
 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
+<div id="collapseSolution8" class="accordion-collapse collapse" aria-labelledby="headingSolution8" data-bs-parent="#accordionSolution8">
 <div class="accordion-body">
 <p>The void theme strips all axis and background, leaving the plot
 alone. This is generally not a meaningful theme to use for publication,
@@ -4089,7 +4089,7 @@ <h1 id="wrap-up">Wrap up<a class="anchor" aria-label="anchor" href="#wrap-up"></
  -->
 </div></section><section id="aio-06-data-manipulation"><p>Content from <a href="06-data-manipulation.html">Data manipulation with dplyr</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/06-data-manipulation.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -4801,7 +4801,7 @@ <h1 id="wrap-up">Wrap up<a class="anchor" aria-label="anchor" href="#wrap-up"></
  -->
 </div></section><section id="aio-07-data-reshaping"><p>Content from <a href="07-data-reshaping.html">Reshaping data with tidyr</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/07-data-reshaping.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -4970,7 +4970,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb5">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5019,7 +5019,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb7">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5068,7 +5068,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb9">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5195,7 +5195,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb15">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5248,7 +5248,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb17">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5301,7 +5301,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb19">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5579,7 +5579,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb34">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5705,7 +5705,7 @@ <h1 id="wrap-up">Wrap up<a class="anchor" aria-label="anchor" href="#wrap-up"></
  -->
 </div></section><section id="aio-08-data-summaries"><p>Content from <a href="08-data-summaries.html">Data summaries with dplyr</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/08-data-summaries.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -5889,7 +5889,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb12">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5933,7 +5933,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb14">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -6132,7 +6132,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb28">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -6178,7 +6178,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb30">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -6344,7 +6344,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb41">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -6540,7 +6540,7 @@ <h3 class="callout-title">Challenge 7<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb53">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -6589,7 +6589,7 @@ <h3 class="callout-title">Challenge 8<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb55">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -6639,7 +6639,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 </div>
 </div></section><section id="aio-09-data-complex-pipelines"><p>Content from <a href="09-data-complex-pipelines.html">Complex data pipelines</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/09-data-complex-pipelines.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -7707,7 +7707,7 @@ <h2 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
 </div>
 </div></section><section id="aio-10-data-manipulation-across"><p>Content from <a href="10-data-manipulation-across.html">Data manipulation across columns</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/10-data-manipulation-across.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <div class="text-end">
@@ -8328,7 +8328,7 @@ <h3 id="learning-more">Learning more<a class="anchor" aria-label="anchor" href="
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/aio.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/aio.html",
-  "dateCreated": "2024-05-08",
+  "dateCreated": "2024-06-04",
   "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
diff --git a/fig/02-data-visualisation-rendered-unnamed-chunk-10-1.png b/fig/02-data-visualisation-rendered-unnamed-chunk-10-1.png
index 34ec75b0..10f8cec2 100644
Binary files a/fig/02-data-visualisation-rendered-unnamed-chunk-10-1.png and b/fig/02-data-visualisation-rendered-unnamed-chunk-10-1.png differ
diff --git a/fig/02-data-visualisation-rendered-unnamed-chunk-15-1.png b/fig/02-data-visualisation-rendered-unnamed-chunk-15-1.png
index 31e8aad7..a5aa0540 100644
Binary files a/fig/02-data-visualisation-rendered-unnamed-chunk-15-1.png and b/fig/02-data-visualisation-rendered-unnamed-chunk-15-1.png differ
diff --git a/fig/02-data-visualisation-rendered-unnamed-chunk-16-1.png b/fig/02-data-visualisation-rendered-unnamed-chunk-16-1.png
index 40dea10d..e641211d 100644
Binary files a/fig/02-data-visualisation-rendered-unnamed-chunk-16-1.png and b/fig/02-data-visualisation-rendered-unnamed-chunk-16-1.png differ
diff --git a/fig/02-data-visualisation-rendered-unnamed-chunk-6-1.png b/fig/02-data-visualisation-rendered-unnamed-chunk-6-1.png
index 555d8e02..c15e869a 100644
Binary files a/fig/02-data-visualisation-rendered-unnamed-chunk-6-1.png and b/fig/02-data-visualisation-rendered-unnamed-chunk-6-1.png differ
diff --git a/fig/02-data-visualisation-rendered-unnamed-chunk-7-1.png b/fig/02-data-visualisation-rendered-unnamed-chunk-7-1.png
index 590c1743..34c59f92 100644
Binary files a/fig/02-data-visualisation-rendered-unnamed-chunk-7-1.png and b/fig/02-data-visualisation-rendered-unnamed-chunk-7-1.png differ
diff --git a/fig/02-data-visualisation-rendered-unnamed-chunk-8-1.png b/fig/02-data-visualisation-rendered-unnamed-chunk-8-1.png
index 3a6acc03..d07d76f9 100644
Binary files a/fig/02-data-visualisation-rendered-unnamed-chunk-8-1.png and b/fig/02-data-visualisation-rendered-unnamed-chunk-8-1.png differ
diff --git a/fig/02-data-visualisation-rendered-unnamed-chunk-9-1.png b/fig/02-data-visualisation-rendered-unnamed-chunk-9-1.png
index a4848272..8fb3fb5f 100644
Binary files a/fig/02-data-visualisation-rendered-unnamed-chunk-9-1.png and b/fig/02-data-visualisation-rendered-unnamed-chunk-9-1.png differ
diff --git a/fig/06-data-manipulation-rendered-unnamed-chunk-12-1.png b/fig/06-data-manipulation-rendered-unnamed-chunk-12-1.png
index 98dea77b..55378543 100644
Binary files a/fig/06-data-manipulation-rendered-unnamed-chunk-12-1.png and b/fig/06-data-manipulation-rendered-unnamed-chunk-12-1.png differ
diff --git a/images.html b/images.html
index cf813930..370daaf1 100644
--- a/images.html
+++ b/images.html
@@ -588,7 +588,7 @@ <h3 id="09-data-complex-pipelines-figure-22">Figure 22</h3>
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/images.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/images.html",
-  "dateCreated": "2024-05-08",
+  "dateCreated": "2024-06-04",
   "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
diff --git a/index.html b/index.html
index 61b8221f..5affa929 100644
--- a/index.html
+++ b/index.html
@@ -316,7 +316,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Windows</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>You can watch the <a href="https://www.youtube.com/watch?v=q0PjTAylwoU" class="external-link">YouTube video
 tutorial</a> for complete instructions.</p>
@@ -341,7 +341,7 @@ <h4 class="accordion-header" id="headingSolution1">Windows</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">MacOS</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>Follow the <a href="https://www.youtube.com/watch?v=5-ly3kyxwEg" class="external-link">video tutorial</a>
 for detailed instructions.</p>
@@ -357,7 +357,7 @@ <h4 class="accordion-header" id="headingSolution2">MacOS</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Linux</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <ul class="task-list"><li><label><input type="checkbox">You can download the binary files
 for your distribution from [CRAN](<a href="http://cran.r-project.org/index.html" class="external-link uri">http://cran.r-project.org/index.html</a></label></li>
@@ -378,7 +378,7 @@ <h4 class="accordion-header" id="headingSolution3">Linux</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">RStudio</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>Please install the <a href="http://www.rstudio.com/ide/download/desktop" class="external-link">RStudio IDE</a>. It
 is the user interface towards R, and is required for this workshop.</p>
@@ -391,7 +391,7 @@ <h4 class="accordion-header" id="headingSolution4">RStudio</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">R packages</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <p>Lastly, you will need to install two packages to join the workshop,
 namely the {tidyverse} and {palmerpenguins} packages. You can do this by
@@ -459,7 +459,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/index.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/index.html",
-  "dateCreated": "2024-05-08",
+  "dateCreated": "2024-06-04",
   "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
diff --git a/instructor-notes.html b/instructor-notes.html
index d22e52ad..59d18e9c 100644
--- a/instructor-notes.html
+++ b/instructor-notes.html
@@ -409,7 +409,7 @@ <h1>Instructor Notes</h1>
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor-notes.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor-notes.html",
-  "dateCreated": "2024-05-08",
+  "dateCreated": "2024-06-04",
   "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
diff --git a/instructor/01-project-introduction.html b/instructor/01-project-introduction.html
index 87349575..d38d5914 100644
--- a/instructor/01-project-introduction.html
+++ b/instructor/01-project-introduction.html
@@ -314,7 +314,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Introduction to R and RStudio</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/01-project-introduction.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -743,8 +743,8 @@ <h3 id="version-control">Version Control<a class="anchor" aria-label="anchor" hr
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/01-project-introduction.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/01-project-introduction.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/instructor/02-data-visualisation.html b/instructor/02-data-visualisation.html
index 73dd8152..26e5c4ee 100644
--- a/instructor/02-data-visualisation.html
+++ b/instructor/02-data-visualisation.html
@@ -310,7 +310,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Visualisation with ggplot2</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/02-data-visualisation.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1195,8 +1195,8 @@ <h2 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/02-data-visualisation.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/02-data-visualisation.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/instructor/03-data-subsetting.html b/instructor/03-data-subsetting.html
index dca0cc48..bc5c9f5b 100644
--- a/instructor/03-data-subsetting.html
+++ b/instructor/03-data-subsetting.html
@@ -310,7 +310,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Subsetting data with dplyr</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/03-data-subsetting.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -511,7 +511,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb8">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -559,7 +559,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb10">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -714,7 +714,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb18">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -762,7 +762,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb20">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -809,7 +809,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb22">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -977,7 +977,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb34">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1025,7 +1025,7 @@ <h3 class="callout-title">Challenge 7<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb36">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1142,7 +1142,7 @@ <h3 class="callout-title">Challenge 8<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
   <h4 class="accordion-header" id="headingSolution8">Show me the solution</h4>
 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
+<div id="collapseSolution8" class="accordion-collapse collapse" aria-labelledby="headingSolution8" data-bs-parent="#accordionSolution8">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb42">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1190,7 +1190,7 @@ <h3 class="callout-title">Challenge 9<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution9" aria-expanded="false" aria-controls="collapseSolution9">
   <h4 class="accordion-header" id="headingSolution9">Show me the solution</h4>
 </button>
-<div id="collapseSolution9" class="accordion-collapse collapse" data-bs-parent="#accordionSolution9" aria-labelledby="headingSolution9">
+<div id="collapseSolution9" class="accordion-collapse collapse" aria-labelledby="headingSolution9" data-bs-parent="#accordionSolution9">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb44">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1305,7 +1305,7 @@ <h3 class="callout-title">Challenge 10<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution10" aria-expanded="false" aria-controls="collapseSolution10">
   <h4 class="accordion-header" id="headingSolution10">Show me the solution</h4>
 </button>
-<div id="collapseSolution10" class="accordion-collapse collapse" data-bs-parent="#accordionSolution10" aria-labelledby="headingSolution10">
+<div id="collapseSolution10" class="accordion-collapse collapse" aria-labelledby="headingSolution10" data-bs-parent="#accordionSolution10">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb52">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1356,7 +1356,7 @@ <h3 class="callout-title">Challenge 11<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution11" aria-expanded="false" aria-controls="collapseSolution11">
   <h4 class="accordion-header" id="headingSolution11">Show me the solution</h4>
 </button>
-<div id="collapseSolution11" class="accordion-collapse collapse" data-bs-parent="#accordionSolution11" aria-labelledby="headingSolution11">
+<div id="collapseSolution11" class="accordion-collapse collapse" aria-labelledby="headingSolution11" data-bs-parent="#accordionSolution11">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb54">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1446,7 +1446,7 @@ <h3 class="callout-title">Challenge 12<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution12" aria-expanded="false" aria-controls="collapseSolution12">
   <h4 class="accordion-header" id="headingSolution12">Show me the solution</h4>
 </button>
-<div id="collapseSolution12" class="accordion-collapse collapse" data-bs-parent="#accordionSolution12" aria-labelledby="headingSolution12">
+<div id="collapseSolution12" class="accordion-collapse collapse" aria-labelledby="headingSolution12" data-bs-parent="#accordionSolution12">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb58">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1549,8 +1549,8 @@ <h1 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/03-data-subsetting.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/03-data-subsetting.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/instructor/04-data-sorting-pipes.html b/instructor/04-data-sorting-pipes.html
index 416d29d1..26e33e37 100644
--- a/instructor/04-data-sorting-pipes.html
+++ b/instructor/04-data-sorting-pipes.html
@@ -311,7 +311,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data sorting and pipes dplyr</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/04-data-sorting-pipes.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -454,7 +454,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb6">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -499,7 +499,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -563,7 +563,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor2">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor2" class="accordion-collapse collapse" aria-labelledby="headingInstructor2" data-bs-parent="#accordionInstructor2">
+<div id="collapseInstructor2" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor2" aria-labelledby="headingInstructor2">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -605,7 +605,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor3">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor3" class="accordion-collapse collapse" aria-labelledby="headingInstructor3" data-bs-parent="#accordionInstructor3">
+<div id="collapseInstructor3" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor3" aria-labelledby="headingInstructor3">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -648,7 +648,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor4">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor4" class="accordion-collapse collapse" aria-labelledby="headingInstructor4" data-bs-parent="#accordionInstructor4">
+<div id="collapseInstructor4" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor4" aria-labelledby="headingInstructor4">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -713,7 +713,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb17">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -759,7 +759,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor5">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor5" class="accordion-collapse collapse" aria-labelledby="headingInstructor5" data-bs-parent="#accordionInstructor5">
+<div id="collapseInstructor5" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor5" aria-labelledby="headingInstructor5">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -808,7 +808,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor6">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor6" class="accordion-collapse collapse" aria-labelledby="headingInstructor6" data-bs-parent="#accordionInstructor6">
+<div id="collapseInstructor6" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor6" aria-labelledby="headingInstructor6">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -862,7 +862,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb23">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -912,7 +912,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb25">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -964,7 +964,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb27">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1010,7 +1010,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor7">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor7" class="accordion-collapse collapse" aria-labelledby="headingInstructor7" data-bs-parent="#accordionInstructor7">
+<div id="collapseInstructor7" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor7" aria-labelledby="headingInstructor7">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -1055,7 +1055,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor8">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor8" class="accordion-collapse collapse" aria-labelledby="headingInstructor8" data-bs-parent="#accordionInstructor8">
+<div id="collapseInstructor8" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor8" aria-labelledby="headingInstructor8">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -1113,7 +1113,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb33">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1244,8 +1244,8 @@ <h1 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/04-data-sorting-pipes.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/04-data-sorting-pipes.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/instructor/05-data-plotting-scales.html b/instructor/05-data-plotting-scales.html
index 9fc6fa2d..2e300c40 100644
--- a/instructor/05-data-plotting-scales.html
+++ b/instructor/05-data-plotting-scales.html
@@ -307,7 +307,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data visualisation and scales</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/05-data-plotting-scales.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -366,7 +366,7 @@ <h1 id="piping-into-ggplot">Piping into ggplot<a class="anchor" aria-label="anch
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -409,7 +409,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button hint-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseHint1" aria-expanded="false" aria-controls="collapseHint1">
   <h4 class="accordion-header" id="headingHint1">Give me a hint</h4>
 </button>
-<div id="collapseHint1" class="accordion-collapse collapse" data-bs-parent="#accordionHint1" aria-labelledby="headingHint1">
+<div id="collapseHint1" class="accordion-collapse collapse" aria-labelledby="headingHint1" data-bs-parent="#accordionHint1">
 <div class="accordion-body">
 <p>Try geom_boxplot</p>
 </div>
@@ -421,7 +421,7 @@ <h4 class="accordion-header" id="headingHint1">Give me a hint</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb2">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -448,7 +448,7 @@ <h1 id="adding-colour">Adding colour<a class="anchor" aria-label="anchor" href="
   <h3 class="accordion-header" id="headingInstructor2">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor2" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor2" aria-labelledby="headingInstructor2">
+<div id="collapseInstructor2" class="accordion-collapse collapse" aria-labelledby="headingInstructor2" data-bs-parent="#accordionInstructor2">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -489,7 +489,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Learning the difference between using <code>fill</code> and
 <code>colour</code>/<code>color</code> can take a little time, but in
@@ -577,7 +577,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>“coral” and “cyan” are built in colour names, that you can call
 directly. There are lots of these names, <a href="https://www.datanovia.com/en/blog/awesome-list-of-657-r-color-names/" class="external-link">datanovia</a>
@@ -614,7 +614,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>hexidecimal colour codes are often use in webdesign, and are a way of
 coding red, blue and green. To explore colours in hexidecmial, there are
@@ -651,7 +651,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <p>The order you provide the manual colours dictate which category gets
 which colour.</p>
@@ -689,7 +689,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <p>There is not single answer here, there are many different options.
 The key difference between what we did before and this, is that the
@@ -777,7 +777,7 @@ <h3 class="callout-title">Challenge 7<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <p>The classic theme is one often wanted by strict and old-school
 journals. Its very handy to have a short-cut to it.</p>
@@ -819,7 +819,7 @@ <h3 class="callout-title">Challenge 8<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
   <h4 class="accordion-header" id="headingSolution8">Show me the solution</h4>
 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
+<div id="collapseSolution8" class="accordion-collapse collapse" aria-labelledby="headingSolution8" data-bs-parent="#accordionSolution8">
 <div class="accordion-body">
 <p>The void theme strips all axis and background, leaving the plot
 alone. This is generally not a meaningful theme to use for publication,
@@ -920,8 +920,8 @@ <h1 id="wrap-up">Wrap up<a class="anchor" aria-label="anchor" href="#wrap-up"></
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/05-data-plotting-scales.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/05-data-plotting-scales.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/instructor/06-data-manipulation.html b/instructor/06-data-manipulation.html
index b075cd35..bb3bf37c 100644
--- a/instructor/06-data-manipulation.html
+++ b/instructor/06-data-manipulation.html
@@ -307,7 +307,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data manipulation with dplyr</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/06-data-manipulation.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1078,8 +1078,8 @@ <h1 id="wrap-up">Wrap up<a class="anchor" aria-label="anchor" href="#wrap-up"></
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/06-data-manipulation.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/06-data-manipulation.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/instructor/07-data-reshaping.html b/instructor/07-data-reshaping.html
index 4a7d736c..a33d38c3 100644
--- a/instructor/07-data-reshaping.html
+++ b/instructor/07-data-reshaping.html
@@ -308,7 +308,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Reshaping data with tidyr</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/07-data-reshaping.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -469,7 +469,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb5">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -518,7 +518,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb7">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -567,7 +567,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb9">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -693,7 +693,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb15">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -746,7 +746,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb17">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -799,7 +799,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb19">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1075,7 +1075,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb34">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1258,8 +1258,8 @@ <h1 id="wrap-up">Wrap up<a class="anchor" aria-label="anchor" href="#wrap-up"></
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/07-data-reshaping.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/07-data-reshaping.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/instructor/08-data-summaries.html b/instructor/08-data-summaries.html
index 0ecf7c62..f40c9db0 100644
--- a/instructor/08-data-summaries.html
+++ b/instructor/08-data-summaries.html
@@ -300,7 +300,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data summaries with dplyr</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/08-data-summaries.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -487,7 +487,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb12">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -531,7 +531,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb14">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -728,7 +728,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb28">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -774,7 +774,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb30">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -939,7 +939,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb41">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1134,7 +1134,7 @@ <h3 class="callout-title">Challenge 7<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb53">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1183,7 +1183,7 @@ <h3 class="callout-title">Challenge 8<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb55">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1292,8 +1292,8 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/08-data-summaries.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/08-data-summaries.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/instructor/09-data-complex-pipelines.html b/instructor/09-data-complex-pipelines.html
index d4beb8cc..9b9ab98c 100644
--- a/instructor/09-data-complex-pipelines.html
+++ b/instructor/09-data-complex-pipelines.html
@@ -300,7 +300,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Complex data pipelines</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/09-data-complex-pipelines.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -1420,8 +1420,8 @@ <h2 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/09-data-complex-pipelines.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/09-data-complex-pipelines.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/instructor/10-data-manipulation-across.html b/instructor/10-data-manipulation-across.html
index a4877157..33a6ef76 100644
--- a/instructor/10-data-manipulation-across.html
+++ b/instructor/10-data-manipulation-across.html
@@ -309,7 +309,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Data manipulation across columns</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/10-data-manipulation-across.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -942,8 +942,8 @@ <h3 id="learning-more">Learning more<a class="anchor" aria-label="anchor" href="
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/10-data-manipulation-across.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/10-data-manipulation-across.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/instructor/404.html b/instructor/404.html
index 7c411198..816fc807 100644
--- a/instructor/404.html
+++ b/instructor/404.html
@@ -366,7 +366,7 @@ <h1>Page not found</h1>
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/404.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/404.html",
-  "dateCreated": "2024-05-08",
+  "dateCreated": "2024-06-04",
   "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
diff --git a/instructor/CODE_OF_CONDUCT.html b/instructor/CODE_OF_CONDUCT.html
index 94e26bb4..e4659554 100644
--- a/instructor/CODE_OF_CONDUCT.html
+++ b/instructor/CODE_OF_CONDUCT.html
@@ -296,7 +296,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Contributor Code of Conduct</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/CODE_OF_CONDUCT.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -380,8 +380,8 @@ <h1>Contributor Code of Conduct</h1>
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/CODE_OF_CONDUCT.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/CODE_OF_CONDUCT.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/instructor/LICENSE.html b/instructor/LICENSE.html
index 014b2837..ef74f81d 100644
--- a/instructor/LICENSE.html
+++ b/instructor/LICENSE.html
@@ -296,7 +296,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
       </div>
       <hr></nav><main id="main-content" class="main-content"><div class="container lesson-content">
         <h1>Licenses</h1>
-        <p>Last updated on 2024-05-21 |
+        <p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/LICENSE.md" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
         
@@ -432,8 +432,8 @@ <h1>Licenses</h1>
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/LICENSE.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/LICENSE.html",
-  "dateCreated": "2024-05-08",
-  "dateModified": "2024-05-21",
+  "dateCreated": "2024-06-04",
+  "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
 
diff --git a/instructor/aio.html b/instructor/aio.html
index 09e74ad3..85b99d22 100644
--- a/instructor/aio.html
+++ b/instructor/aio.html
@@ -356,7 +356,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
         
 <section id="aio-01-project-introduction"><p>Content from <a href="01-project-introduction.html">Introduction to R and RStudio</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/01-project-introduction.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 49 minutes</p>
@@ -779,7 +779,7 @@ <h3 id="version-control">Version Control<a class="anchor" aria-label="anchor" hr
 </div>
 </section></section><section id="aio-02-data-visualisation"><p>Content from <a href="02-data-visualisation.html">Visualisation with ggplot2</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/02-data-visualisation.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 68 minutes</p>
@@ -1622,7 +1622,7 @@ <h2 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
 </div>
 </div></section><section id="aio-03-data-subsetting"><p>Content from <a href="03-data-subsetting.html">Subsetting data with dplyr</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/03-data-subsetting.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 72 minutes</p>
@@ -1826,7 +1826,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb8">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -1874,7 +1874,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb10">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2034,7 +2034,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb18">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2082,7 +2082,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb20">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2129,7 +2129,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb22">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2298,7 +2298,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb34">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2346,7 +2346,7 @@ <h3 class="callout-title">Challenge 7<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb36">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2464,7 +2464,7 @@ <h3 class="callout-title">Challenge 8<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
   <h4 class="accordion-header" id="headingSolution8">Show me the solution</h4>
 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
+<div id="collapseSolution8" class="accordion-collapse collapse" aria-labelledby="headingSolution8" data-bs-parent="#accordionSolution8">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb42">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2512,7 +2512,7 @@ <h3 class="callout-title">Challenge 9<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution9" aria-expanded="false" aria-controls="collapseSolution9">
   <h4 class="accordion-header" id="headingSolution9">Show me the solution</h4>
 </button>
-<div id="collapseSolution9" class="accordion-collapse collapse" data-bs-parent="#accordionSolution9" aria-labelledby="headingSolution9">
+<div id="collapseSolution9" class="accordion-collapse collapse" aria-labelledby="headingSolution9" data-bs-parent="#accordionSolution9">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb44">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2628,7 +2628,7 @@ <h3 class="callout-title">Challenge 10<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution10" aria-expanded="false" aria-controls="collapseSolution10">
   <h4 class="accordion-header" id="headingSolution10">Show me the solution</h4>
 </button>
-<div id="collapseSolution10" class="accordion-collapse collapse" data-bs-parent="#accordionSolution10" aria-labelledby="headingSolution10">
+<div id="collapseSolution10" class="accordion-collapse collapse" aria-labelledby="headingSolution10" data-bs-parent="#accordionSolution10">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb52">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2679,7 +2679,7 @@ <h3 class="callout-title">Challenge 11<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution11" aria-expanded="false" aria-controls="collapseSolution11">
   <h4 class="accordion-header" id="headingSolution11">Show me the solution</h4>
 </button>
-<div id="collapseSolution11" class="accordion-collapse collapse" data-bs-parent="#accordionSolution11" aria-labelledby="headingSolution11">
+<div id="collapseSolution11" class="accordion-collapse collapse" aria-labelledby="headingSolution11" data-bs-parent="#accordionSolution11">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb54">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2770,7 +2770,7 @@ <h3 class="callout-title">Challenge 12<a class="anchor" aria-label="anchor" href
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution12" aria-expanded="false" aria-controls="collapseSolution12">
   <h4 class="accordion-header" id="headingSolution12">Show me the solution</h4>
 </button>
-<div id="collapseSolution12" class="accordion-collapse collapse" data-bs-parent="#accordionSolution12" aria-labelledby="headingSolution12">
+<div id="collapseSolution12" class="accordion-collapse collapse" aria-labelledby="headingSolution12" data-bs-parent="#accordionSolution12">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb58">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -2815,7 +2815,7 @@ <h1 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
  -->
 </div></section><section id="aio-04-data-sorting-pipes"><p>Content from <a href="04-data-sorting-pipes.html">Data sorting and pipes dplyr</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/04-data-sorting-pipes.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 67 minutes</p>
@@ -2957,7 +2957,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb6">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3003,7 +3003,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -3067,7 +3067,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor2">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor2" class="accordion-collapse collapse" aria-labelledby="headingInstructor2" data-bs-parent="#accordionInstructor2">
+<div id="collapseInstructor2" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor2" aria-labelledby="headingInstructor2">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -3109,7 +3109,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor3">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor3" class="accordion-collapse collapse" aria-labelledby="headingInstructor3" data-bs-parent="#accordionInstructor3">
+<div id="collapseInstructor3" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor3" aria-labelledby="headingInstructor3">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -3152,7 +3152,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor4">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor4" class="accordion-collapse collapse" aria-labelledby="headingInstructor4" data-bs-parent="#accordionInstructor4">
+<div id="collapseInstructor4" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor4" aria-labelledby="headingInstructor4">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -3217,7 +3217,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb17">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3264,7 +3264,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor5">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor5" class="accordion-collapse collapse" aria-labelledby="headingInstructor5" data-bs-parent="#accordionInstructor5">
+<div id="collapseInstructor5" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor5" aria-labelledby="headingInstructor5">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -3313,7 +3313,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor6">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor6" class="accordion-collapse collapse" aria-labelledby="headingInstructor6" data-bs-parent="#accordionInstructor6">
+<div id="collapseInstructor6" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor6" aria-labelledby="headingInstructor6">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -3367,7 +3367,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb23">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3417,7 +3417,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb25">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3469,7 +3469,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb27">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3516,7 +3516,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor7">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor7" class="accordion-collapse collapse" aria-labelledby="headingInstructor7" data-bs-parent="#accordionInstructor7">
+<div id="collapseInstructor7" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor7" aria-labelledby="headingInstructor7">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -3561,7 +3561,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
   <h3 class="accordion-header" id="headingInstructor8">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor8" class="accordion-collapse collapse" aria-labelledby="headingInstructor8" data-bs-parent="#accordionInstructor8">
+<div id="collapseInstructor8" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor8" aria-labelledby="headingInstructor8">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -3621,7 +3621,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb33">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3694,7 +3694,7 @@ <h1 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
  -->
 </div></section><section id="aio-05-data-plotting-scales"><p>Content from <a href="05-data-plotting-scales.html">Data visualisation and scales</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/05-data-plotting-scales.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 65 minutes</p>
@@ -3752,7 +3752,7 @@ <h1 id="piping-into-ggplot">Piping into ggplot<a class="anchor" aria-label="anch
   <h3 class="accordion-header" id="headingInstructor1">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor1" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor1" aria-labelledby="headingInstructor1">
+<div id="collapseInstructor1" class="accordion-collapse collapse" aria-labelledby="headingInstructor1" data-bs-parent="#accordionInstructor1">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -3795,7 +3795,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button hint-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseHint1" aria-expanded="false" aria-controls="collapseHint1">
   <h4 class="accordion-header" id="headingHint1">Give me a hint</h4>
 </button>
-<div id="collapseHint1" class="accordion-collapse collapse" data-bs-parent="#accordionHint1" aria-labelledby="headingHint1">
+<div id="collapseHint1" class="accordion-collapse collapse" aria-labelledby="headingHint1" data-bs-parent="#accordionHint1">
 <div class="accordion-body">
 <p>Try geom_boxplot</p>
 </div>
@@ -3807,7 +3807,7 @@ <h4 class="accordion-header" id="headingHint1">Give me a hint</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb2">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -3836,7 +3836,7 @@ <h1 id="adding-colour">Adding colour<a class="anchor" aria-label="anchor" href="
   <h3 class="accordion-header" id="headingInstructor2">
 <div class="note-square"><i aria-hidden="true" class="callout-icon" data-feather="edit-2"></i></div>Instructor Note</h3>
 </button>
-<div id="collapseInstructor2" class="accordion-collapse collapse" data-bs-parent="#accordionInstructor2" aria-labelledby="headingInstructor2">
+<div id="collapseInstructor2" class="accordion-collapse collapse" aria-labelledby="headingInstructor2" data-bs-parent="#accordionInstructor2">
 <div class="accordion-body">
 <p>When reading this part, read it as follows when typing:</p>
 <blockquote>
@@ -3877,7 +3877,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <p>Learning the difference between using <code>fill</code> and
 <code>colour</code>/<code>color</code> can take a little time, but in
@@ -3967,7 +3967,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <p>“coral” and “cyan” are built in colour names, that you can call
 directly. There are lots of these names, <a href="https://www.datanovia.com/en/blog/awesome-list-of-657-r-color-names/" class="external-link">datanovia</a>
@@ -4005,7 +4005,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <p>hexidecimal colour codes are often use in webdesign, and are a way of
 coding red, blue and green. To explore colours in hexidecmial, there are
@@ -4043,7 +4043,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <p>The order you provide the manual colours dictate which category gets
 which colour.</p>
@@ -4082,7 +4082,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <p>There is not single answer here, there are many different options.
 The key difference between what we did before and this, is that the
@@ -4172,7 +4172,7 @@ <h3 class="callout-title">Challenge 7<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <p>The classic theme is one often wanted by strict and old-school
 journals. Its very handy to have a short-cut to it.</p>
@@ -4215,7 +4215,7 @@ <h3 class="callout-title">Challenge 8<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution8" aria-expanded="false" aria-controls="collapseSolution8">
   <h4 class="accordion-header" id="headingSolution8">Show me the solution</h4>
 </button>
-<div id="collapseSolution8" class="accordion-collapse collapse" data-bs-parent="#accordionSolution8" aria-labelledby="headingSolution8">
+<div id="collapseSolution8" class="accordion-collapse collapse" aria-labelledby="headingSolution8" data-bs-parent="#accordionSolution8">
 <div class="accordion-body">
 <p>The void theme strips all axis and background, leaving the plot
 alone. This is generally not a meaningful theme to use for publication,
@@ -4259,7 +4259,7 @@ <h1 id="wrap-up">Wrap up<a class="anchor" aria-label="anchor" href="#wrap-up"></
  -->
 </div></section><section id="aio-06-data-manipulation"><p>Content from <a href="06-data-manipulation.html">Data manipulation with dplyr</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/06-data-manipulation.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 65 minutes</p>
@@ -4972,7 +4972,7 @@ <h1 id="wrap-up">Wrap up<a class="anchor" aria-label="anchor" href="#wrap-up"></
  -->
 </div></section><section id="aio-07-data-reshaping"><p>Content from <a href="07-data-reshaping.html">Reshaping data with tidyr</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/07-data-reshaping.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 66 minutes</p>
@@ -5142,7 +5142,7 @@ <h3 class="callout-title">Challenge 1<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb5">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5191,7 +5191,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb7">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5240,7 +5240,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb9">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5367,7 +5367,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb15">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5420,7 +5420,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb17">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5473,7 +5473,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb19">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5751,7 +5751,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb34">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -5877,7 +5877,7 @@ <h1 id="wrap-up">Wrap up<a class="anchor" aria-label="anchor" href="#wrap-up"></
  -->
 </div></section><section id="aio-08-data-summaries"><p>Content from <a href="08-data-summaries.html">Data summaries with dplyr</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/08-data-summaries.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 68 minutes</p>
@@ -6062,7 +6062,7 @@ <h3 class="callout-title">Challenge 2<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Show me the solution</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb12">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -6106,7 +6106,7 @@ <h3 class="callout-title">Challenge 3<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">Show me the solution</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb14">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -6305,7 +6305,7 @@ <h3 class="callout-title">Challenge 4<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Show me the solution</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb28">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -6351,7 +6351,7 @@ <h3 class="callout-title">Challenge 5<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">Show me the solution</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb30">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -6517,7 +6517,7 @@ <h3 class="callout-title">Challenge 6<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">Show me the solution</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb41">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -6713,7 +6713,7 @@ <h3 class="callout-title">Challenge 7<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution6" aria-expanded="false" aria-controls="collapseSolution6">
   <h4 class="accordion-header" id="headingSolution6">Show me the solution</h4>
 </button>
-<div id="collapseSolution6" class="accordion-collapse collapse" data-bs-parent="#accordionSolution6" aria-labelledby="headingSolution6">
+<div id="collapseSolution6" class="accordion-collapse collapse" aria-labelledby="headingSolution6" data-bs-parent="#accordionSolution6">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb53">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -6762,7 +6762,7 @@ <h3 class="callout-title">Challenge 8<a class="anchor" aria-label="anchor" href=
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution7" aria-expanded="false" aria-controls="collapseSolution7">
   <h4 class="accordion-header" id="headingSolution7">Show me the solution</h4>
 </button>
-<div id="collapseSolution7" class="accordion-collapse collapse" data-bs-parent="#accordionSolution7" aria-labelledby="headingSolution7">
+<div id="collapseSolution7" class="accordion-collapse collapse" aria-labelledby="headingSolution7" data-bs-parent="#accordionSolution7">
 <div class="accordion-body">
 <div class="codewrapper sourceCode" id="cb55">
 <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i aria-hidden="true" data-feather="chevron-right"></i>
@@ -6812,7 +6812,7 @@ <h3 class="code-label">OUTPUT<i aria-hidden="true" data-feather="chevron-left"><
 </div>
 </div></section><section id="aio-09-data-complex-pipelines"><p>Content from <a href="09-data-complex-pipelines.html">Complex data pipelines</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/09-data-complex-pipelines.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 67 minutes</p>
@@ -7881,7 +7881,7 @@ <h2 id="wrap-up">Wrap-up<a class="anchor" aria-label="anchor" href="#wrap-up"></
 </div>
 </div></section><section id="aio-10-data-manipulation-across"><p>Content from <a href="10-data-manipulation-across.html">Data manipulation across columns</a></p>
 <hr>
-<p>Last updated on 2024-05-21 |
+<p>Last updated on 2024-06-04 |
         
         <a href="https://github.com/athanasiamo/r-tidyverse-4-datasets/edit/main/episodes/10-data-manipulation-across.Rmd" class="external-link">Edit this page <i aria-hidden="true" data-feather="edit"></i></a></p>
 <p>Estimated time: <i aria-hidden="true" data-feather="clock"></i> 51 minutes</p>
@@ -8503,7 +8503,7 @@ <h3 id="learning-more">Learning more<a class="anchor" aria-label="anchor" href="
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/aio.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/aio.html",
-  "dateCreated": "2024-05-08",
+  "dateCreated": "2024-06-04",
   "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
diff --git a/instructor/images.html b/instructor/images.html
index f69b5a38..25cd46b1 100644
--- a/instructor/images.html
+++ b/instructor/images.html
@@ -588,7 +588,7 @@ <h3 id="09-data-complex-pipelines-figure-22">Figure 22</h3>
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/images.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/images.html",
-  "dateCreated": "2024-05-08",
+  "dateCreated": "2024-06-04",
   "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
diff --git a/instructor/index.html b/instructor/index.html
index 46e430b0..5b81441b 100644
--- a/instructor/index.html
+++ b/instructor/index.html
@@ -428,7 +428,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution1" aria-expanded="false" aria-controls="collapseSolution1">
   <h4 class="accordion-header" id="headingSolution1">Windows</h4>
 </button>
-<div id="collapseSolution1" class="accordion-collapse collapse" aria-labelledby="headingSolution1" data-bs-parent="#accordionSolution1">
+<div id="collapseSolution1" class="accordion-collapse collapse" data-bs-parent="#accordionSolution1" aria-labelledby="headingSolution1">
 <div class="accordion-body">
 <p>You can watch the <a href="https://www.youtube.com/watch?v=q0PjTAylwoU" class="external-link">YouTube video
 tutorial</a> for complete instructions.</p>
@@ -453,7 +453,7 @@ <h4 class="accordion-header" id="headingSolution1">Windows</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution2" aria-expanded="false" aria-controls="collapseSolution2">
   <h4 class="accordion-header" id="headingSolution2">MacOS</h4>
 </button>
-<div id="collapseSolution2" class="accordion-collapse collapse" aria-labelledby="headingSolution2" data-bs-parent="#accordionSolution2">
+<div id="collapseSolution2" class="accordion-collapse collapse" data-bs-parent="#accordionSolution2" aria-labelledby="headingSolution2">
 <div class="accordion-body">
 <p>Follow the <a href="https://www.youtube.com/watch?v=5-ly3kyxwEg" class="external-link">video tutorial</a>
 for detailed instructions.</p>
@@ -469,7 +469,7 @@ <h4 class="accordion-header" id="headingSolution2">MacOS</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution3" aria-expanded="false" aria-controls="collapseSolution3">
   <h4 class="accordion-header" id="headingSolution3">Linux</h4>
 </button>
-<div id="collapseSolution3" class="accordion-collapse collapse" aria-labelledby="headingSolution3" data-bs-parent="#accordionSolution3">
+<div id="collapseSolution3" class="accordion-collapse collapse" data-bs-parent="#accordionSolution3" aria-labelledby="headingSolution3">
 <div class="accordion-body">
 <ul class="task-list"><li><label><input type="checkbox">You can download the binary files
 for your distribution from [CRAN](<a href="http://cran.r-project.org/index.html" class="external-link uri">http://cran.r-project.org/index.html</a></label></li>
@@ -490,7 +490,7 @@ <h4 class="accordion-header" id="headingSolution3">Linux</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution4" aria-expanded="false" aria-controls="collapseSolution4">
   <h4 class="accordion-header" id="headingSolution4">RStudio</h4>
 </button>
-<div id="collapseSolution4" class="accordion-collapse collapse" aria-labelledby="headingSolution4" data-bs-parent="#accordionSolution4">
+<div id="collapseSolution4" class="accordion-collapse collapse" data-bs-parent="#accordionSolution4" aria-labelledby="headingSolution4">
 <div class="accordion-body">
 <p>Please install the <a href="http://www.rstudio.com/ide/download/desktop" class="external-link">RStudio IDE</a>. It
 is the user interface towards R, and is required for this workshop.</p>
@@ -503,7 +503,7 @@ <h4 class="accordion-header" id="headingSolution4">RStudio</h4>
 <button class="accordion-button solution-button collapsed" type="button" data-bs-toggle="collapse" data-bs-target="#collapseSolution5" aria-expanded="false" aria-controls="collapseSolution5">
   <h4 class="accordion-header" id="headingSolution5">R packages</h4>
 </button>
-<div id="collapseSolution5" class="accordion-collapse collapse" aria-labelledby="headingSolution5" data-bs-parent="#accordionSolution5">
+<div id="collapseSolution5" class="accordion-collapse collapse" data-bs-parent="#accordionSolution5" aria-labelledby="headingSolution5">
 <div class="accordion-body">
 <p>Lastly, you will need to install two packages to join the workshop,
 namely the {tidyverse} and {palmerpenguins} packages. You can do this by
@@ -571,7 +571,7 @@ <h3 class="code-label">R<i aria-hidden="true" data-feather="chevron-left"></i><i
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/index.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/index.html",
-  "dateCreated": "2024-05-08",
+  "dateCreated": "2024-06-04",
   "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
diff --git a/instructor/instructor-notes.html b/instructor/instructor-notes.html
index 941e2f64..37f66401 100644
--- a/instructor/instructor-notes.html
+++ b/instructor/instructor-notes.html
@@ -516,7 +516,7 @@ <h3 id="05-data-plotting-scales-headingInstructor1">
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/instructor-notes.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/instructor-notes.html",
-  "dateCreated": "2024-05-08",
+  "dateCreated": "2024-06-04",
   "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
diff --git a/instructor/key-points.html b/instructor/key-points.html
index e307f935..820d2f29 100644
--- a/instructor/key-points.html
+++ b/instructor/key-points.html
@@ -427,7 +427,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/key-points.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/key-points.html",
-  "dateCreated": "2024-05-08",
+  "dateCreated": "2024-06-04",
   "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
diff --git a/instructor/profiles.html b/instructor/profiles.html
index a51ec5f0..c6bfdd5a 100644
--- a/instructor/profiles.html
+++ b/instructor/profiles.html
@@ -332,7 +332,7 @@ <h1>Learner Profiles</h1>
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/profiles.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/instructor/profiles.html",
-  "dateCreated": "2024-05-08",
+  "dateCreated": "2024-06-04",
   "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
diff --git a/key-points.html b/key-points.html
index 40d19138..ba7f7b7c 100644
--- a/key-points.html
+++ b/key-points.html
@@ -427,7 +427,7 @@ <h2 class="accordion-header" id="flush-headingTwelve">
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/key-points.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/key-points.html",
-  "dateCreated": "2024-05-08",
+  "dateCreated": "2024-06-04",
   "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }
diff --git a/md5sum.txt b/md5sum.txt
index 9f2196cb..06918fff 100644
--- a/md5sum.txt
+++ b/md5sum.txt
@@ -1,20 +1,20 @@
 "file" "checksum" "built" "date"
-"CODE_OF_CONDUCT.md" "8d9e44dd5c39f241b5e8b47ecfc802d1" "site/built/CODE_OF_CONDUCT.md" "2024-05-21"
-"LICENSE.md" "afaf427b4223952624dcb6d8ded53ec0" "site/built/LICENSE.md" "2024-05-21"
-"config.yaml" "8a792282bff9e898778b401920b6f9a8" "site/built/config.yaml" "2024-05-21"
-"index.md" "a02c9c785ed98ddd84fe3d34ddb12fcd" "site/built/index.md" "2024-05-21"
-"links.md" "8184cf4149eafbf03ce8da8ff0778c14" "site/built/links.md" "2024-05-21"
-"episodes/01-project-introduction.Rmd" "85a6bc9fb924dcaaad246c479be6ed42" "site/built/01-project-introduction.md" "2024-05-21"
-"episodes/02-data-visualisation.Rmd" "f01af1c13c02f0248a05ea6893aa0ba8" "site/built/02-data-visualisation.md" "2024-05-21"
-"episodes/03-data-subsetting.Rmd" "9380373f6f554a0f109a2e399c34e137" "site/built/03-data-subsetting.md" "2024-05-21"
-"episodes/04-data-sorting-pipes.Rmd" "0642d7c251442344e27f7c057e2b714a" "site/built/04-data-sorting-pipes.md" "2024-05-21"
-"episodes/05-data-plotting-scales.Rmd" "819480fb05a22b435f22d2b025f41cfa" "site/built/05-data-plotting-scales.md" "2024-05-21"
-"episodes/06-data-manipulation.Rmd" "5fad3f4fbcaa6c605f2eb1928c8a55f7" "site/built/06-data-manipulation.md" "2024-05-21"
-"episodes/07-data-reshaping.Rmd" "83a42d7216c1c0e502be56f57bc39abe" "site/built/07-data-reshaping.md" "2024-05-21"
-"episodes/08-data-summaries.Rmd" "a37d3fecd97bb93441a8ac64c1d7d2aa" "site/built/08-data-summaries.md" "2024-05-21"
-"episodes/09-data-complex-pipelines.Rmd" "b9c48d1e0c0000a46c8c1fd5e6c45a29" "site/built/09-data-complex-pipelines.md" "2024-05-21"
-"episodes/10-data-manipulation-across.Rmd" "90d2a60c36c2d30825e5e0d6ad63c0d9" "site/built/10-data-manipulation-across.md" "2024-05-21"
-"instructors/instructor-notes.md" "60b93493cf1da06dfd63255d73854461" "site/built/instructor-notes.md" "2024-05-21"
-"learners/setup.md" "969ce71ddf0e8ed639bd94df7feb8858" "site/built/setup.md" "2024-05-21"
-"profiles/learner-profiles.md" "60b93493cf1da06dfd63255d73854461" "site/built/learner-profiles.md" "2024-05-21"
-"renv/profiles/lesson-requirements/renv.lock" "8fad97da09b4211feec2d78f61f9c88c" "site/built/renv.lock" "2024-05-21"
+"CODE_OF_CONDUCT.md" "8d9e44dd5c39f241b5e8b47ecfc802d1" "site/built/CODE_OF_CONDUCT.md" "2024-06-04"
+"LICENSE.md" "afaf427b4223952624dcb6d8ded53ec0" "site/built/LICENSE.md" "2024-06-04"
+"config.yaml" "8a792282bff9e898778b401920b6f9a8" "site/built/config.yaml" "2024-06-04"
+"index.md" "a02c9c785ed98ddd84fe3d34ddb12fcd" "site/built/index.md" "2024-06-04"
+"links.md" "8184cf4149eafbf03ce8da8ff0778c14" "site/built/links.md" "2024-06-04"
+"episodes/01-project-introduction.Rmd" "85a6bc9fb924dcaaad246c479be6ed42" "site/built/01-project-introduction.md" "2024-06-04"
+"episodes/02-data-visualisation.Rmd" "f01af1c13c02f0248a05ea6893aa0ba8" "site/built/02-data-visualisation.md" "2024-06-04"
+"episodes/03-data-subsetting.Rmd" "9380373f6f554a0f109a2e399c34e137" "site/built/03-data-subsetting.md" "2024-06-04"
+"episodes/04-data-sorting-pipes.Rmd" "0642d7c251442344e27f7c057e2b714a" "site/built/04-data-sorting-pipes.md" "2024-06-04"
+"episodes/05-data-plotting-scales.Rmd" "819480fb05a22b435f22d2b025f41cfa" "site/built/05-data-plotting-scales.md" "2024-06-04"
+"episodes/06-data-manipulation.Rmd" "5fad3f4fbcaa6c605f2eb1928c8a55f7" "site/built/06-data-manipulation.md" "2024-06-04"
+"episodes/07-data-reshaping.Rmd" "83a42d7216c1c0e502be56f57bc39abe" "site/built/07-data-reshaping.md" "2024-06-04"
+"episodes/08-data-summaries.Rmd" "a37d3fecd97bb93441a8ac64c1d7d2aa" "site/built/08-data-summaries.md" "2024-06-04"
+"episodes/09-data-complex-pipelines.Rmd" "b9c48d1e0c0000a46c8c1fd5e6c45a29" "site/built/09-data-complex-pipelines.md" "2024-06-04"
+"episodes/10-data-manipulation-across.Rmd" "90d2a60c36c2d30825e5e0d6ad63c0d9" "site/built/10-data-manipulation-across.md" "2024-06-04"
+"instructors/instructor-notes.md" "60b93493cf1da06dfd63255d73854461" "site/built/instructor-notes.md" "2024-06-04"
+"learners/setup.md" "969ce71ddf0e8ed639bd94df7feb8858" "site/built/setup.md" "2024-06-04"
+"profiles/learner-profiles.md" "60b93493cf1da06dfd63255d73854461" "site/built/learner-profiles.md" "2024-06-04"
+"renv/profiles/lesson-requirements/renv.lock" "63aabdc32d22fc2ddd856fc7a8f56771" "site/built/renv.lock" "2024-06-04"
diff --git a/pkgdown.yml b/pkgdown.yml
index e476c2a3..44bc4481 100644
--- a/pkgdown.yml
+++ b/pkgdown.yml
@@ -2,5 +2,5 @@ pandoc: 3.1.11
 pkgdown: 2.0.9
 pkgdown_sha: ~
 articles: {}
-last_built: 2024-06-04T00:51Z
+last_built: 2024-06-04T08:25Z
 
diff --git a/profiles.html b/profiles.html
index 0720caf3..6d9ae2d6 100644
--- a/profiles.html
+++ b/profiles.html
@@ -333,7 +333,7 @@ <h1>Learner Profiles</h1>
   "creativeWorkStatus": "active",
   "url": "https://athanasiamo.github.io/r-tidyverse-4-datasets/profiles.html",
   "identifier": "https://athanasiamo.github.io/r-tidyverse-4-datasets/profiles.html",
-  "dateCreated": "2024-05-08",
+  "dateCreated": "2024-06-04",
   "dateModified": "2024-06-04",
   "datePublished": "2024-06-04"
 }