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<!DOCTYPE html>
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<title> 10 Exercise 3: Test your knowledge | R for Conditional Process Analysis</title>
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<li class="chapter" data-level="1" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html"><i class="fa fa-check"></i><b>1</b> Tutorial: Installing & Understanding R/R Studio</a>
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<li class="chapter" data-level="1.5.1" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html#source-writing-your-own-code"><i class="fa fa-check"></i><b>1.5.1</b> Source: Writing your own code</a></li>
<li class="chapter" data-level="1.5.2" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html#console-printing-results"><i class="fa fa-check"></i><b>1.5.2</b> Console: Printing results</a></li>
<li class="chapter" data-level="1.5.3" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html#environment-overview-of-objects"><i class="fa fa-check"></i><b>1.5.3</b> Environment: Overview of objects</a></li>
<li class="chapter" data-level="1.5.4" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html#plotshelppackages-do-everything-else"><i class="fa fa-check"></i><b>1.5.4</b> Plots/Help/Packages: Do everything else</a></li>
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<li class="chapter" data-level="1.6" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html#take-aways"><i class="fa fa-check"></i><b>1.6</b> Take-Aways</a></li>
<li class="chapter" data-level="1.7" data-path="tutorial-installing-understanding-rr-studio.html"><a href="tutorial-installing-understanding-rr-studio.html#additional-tutorials"><i class="fa fa-check"></i><b>1.7</b> Additional tutorials</a></li>
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<li class="chapter" data-level="2" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html"><i class="fa fa-check"></i><b>2</b> Tutorial: Workflow in R</a>
<ul>
<li class="chapter" data-level="2.1" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#defining-your-working-directory"><i class="fa fa-check"></i><b>2.1</b> Defining your working directory</a></li>
<li class="chapter" data-level="2.2" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#packages"><i class="fa fa-check"></i><b>2.2</b> Packages</a>
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<li class="chapter" data-level="2.2.1" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#installing-packages"><i class="fa fa-check"></i><b>2.2.1</b> Installing packages</a></li>
<li class="chapter" data-level="2.2.2" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#activating-packages"><i class="fa fa-check"></i><b>2.2.2</b> Activating packages</a></li>
<li class="chapter" data-level="2.2.3" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#getting-information-about-packages"><i class="fa fa-check"></i><b>2.2.3</b> Getting information about packages</a></li>
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<li class="chapter" data-level="2.3" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#help"><i class="fa fa-check"></i><b>2.3</b> Help?!</a>
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<li class="chapter" data-level="2.3.1" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#finding-information-about-packages"><i class="fa fa-check"></i><b>2.3.1</b> Finding information about packages</a></li>
<li class="chapter" data-level="2.3.2" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#finding-information-about-functions"><i class="fa fa-check"></i><b>2.3.2</b> Finding information about functions</a></li>
<li class="chapter" data-level="2.3.3" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#searching-for-help-online"><i class="fa fa-check"></i><b>2.3.3</b> Searching for help online</a></li>
<li class="chapter" data-level="2.3.4" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#interrupting-r"><i class="fa fa-check"></i><b>2.3.4</b> Interrupting R</a></li>
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<li class="chapter" data-level="2.4" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#saving-loading-cleaning-coderesults"><i class="fa fa-check"></i><b>2.4</b> Saving, loading & cleaning code/results</a>
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<li class="chapter" data-level="2.4.1" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#saving-your-code"><i class="fa fa-check"></i><b>2.4.1</b> Saving your code</a></li>
<li class="chapter" data-level="2.4.2" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#saving-your-results"><i class="fa fa-check"></i><b>2.4.2</b> Saving your results</a></li>
<li class="chapter" data-level="2.4.3" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#loading-working-spaces"><i class="fa fa-check"></i><b>2.4.3</b> Loading working spaces</a></li>
<li class="chapter" data-level="2.4.4" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#clean-your-working-space"><i class="fa fa-check"></i><b>2.4.4</b> Clean your working space</a></li>
<li class="chapter" data-level="2.4.5" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#take-aways-1"><i class="fa fa-check"></i><b>2.4.5</b> Take Aways</a></li>
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<li class="chapter" data-level="2.5" data-path="tutorial-workflow-in-r.html"><a href="tutorial-workflow-in-r.html#additional-tutorials-1"><i class="fa fa-check"></i><b>2.5</b> Additional tutorials</a></li>
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<li class="chapter" data-level="3" data-path="tutorial-using-r-as-a-calculator.html"><a href="tutorial-using-r-as-a-calculator.html"><i class="fa fa-check"></i><b>3</b> Tutorial: Using R as a calculator</a>
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<li class="chapter" data-level="3.1" data-path="tutorial-using-r-as-a-calculator.html"><a href="tutorial-using-r-as-a-calculator.html#using-variables-for-calculation"><i class="fa fa-check"></i><b>3.1</b> Using variables for calculation</a></li>
<li class="chapter" data-level="3.2" data-path="tutorial-using-r-as-a-calculator.html"><a href="tutorial-using-r-as-a-calculator.html#using-vectors-for-calculation"><i class="fa fa-check"></i><b>3.2</b> Using vectors for calculation</a></li>
<li class="chapter" data-level="3.3" data-path="tutorial-using-r-as-a-calculator.html"><a href="tutorial-using-r-as-a-calculator.html#take-aways-2"><i class="fa fa-check"></i><b>3.3</b> Take-Aways</a></li>
</ul></li>
<li class="chapter" data-level="4" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html"><i class="fa fa-check"></i><b>4</b> Tutorial: Objects & structures in R</a>
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<li class="chapter" data-level="4.1" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#types-of-data"><i class="fa fa-check"></i><b>4.1</b> Types of data</a>
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<li class="chapter" data-level="4.1.1" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#accessing-variables-in-data-sets"><i class="fa fa-check"></i><b>4.1.1</b> Accessing variables in data sets</a></li>
<li class="chapter" data-level="4.1.2" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#numbers"><i class="fa fa-check"></i><b>4.1.2</b> Numbers</a></li>
<li class="chapter" data-level="4.1.3" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#text"><i class="fa fa-check"></i><b>4.1.3</b> Text</a></li>
<li class="chapter" data-level="4.1.4" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#factors"><i class="fa fa-check"></i><b>4.1.4</b> Factors</a></li>
<li class="chapter" data-level="4.1.5" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#dates"><i class="fa fa-check"></i><b>4.1.5</b> Dates</a></li>
<li class="chapter" data-level="4.1.6" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#missing-datanas"><i class="fa fa-check"></i><b>4.1.6</b> Missing data/NAs</a></li>
<li class="chapter" data-level="4.1.7" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#logicalother-operators"><i class="fa fa-check"></i><b>4.1.7</b> Logical/other operators</a></li>
</ul></li>
<li class="chapter" data-level="4.2" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#types-of-objects"><i class="fa fa-check"></i><b>4.2</b> Types of objects</a>
<ul>
<li class="chapter" data-level="4.2.1" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#scalars"><i class="fa fa-check"></i><b>4.2.1</b> Scalars</a></li>
<li class="chapter" data-level="4.2.2" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#vectors"><i class="fa fa-check"></i><b>4.2.2</b> Vectors</a></li>
<li class="chapter" data-level="4.2.3" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#data-frames-matrices"><i class="fa fa-check"></i><b>4.2.3</b> Data frames & matrices</a></li>
<li class="chapter" data-level="4.2.4" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#lists"><i class="fa fa-check"></i><b>4.2.4</b> Lists</a></li>
<li class="chapter" data-level="4.2.5" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#other-types-of-objects"><i class="fa fa-check"></i><b>4.2.5</b> Other types of objects</a></li>
</ul></li>
<li class="chapter" data-level="4.3" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#take-aways-3"><i class="fa fa-check"></i><b>4.3</b> Take Aways</a></li>
<li class="chapter" data-level="4.4" data-path="tutorial-objects-structures-in-r.html"><a href="tutorial-objects-structures-in-r.html#additional-tutorials-2"><i class="fa fa-check"></i><b>4.4</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="5" data-path="tutorial-reading-data-inout.html"><a href="tutorial-reading-data-inout.html"><i class="fa fa-check"></i><b>5</b> Tutorial: Reading data in/out</a>
<ul>
<li class="chapter" data-level="5.1" data-path="tutorial-reading-data-inout.html"><a href="tutorial-reading-data-inout.html#getting-data-into-r"><i class="fa fa-check"></i><b>5.1</b> Getting data into R</a></li>
<li class="chapter" data-level="5.2" data-path="tutorial-reading-data-inout.html"><a href="tutorial-reading-data-inout.html#getting-data-out-of-r"><i class="fa fa-check"></i><b>5.2</b> Getting data out of R</a></li>
<li class="chapter" data-level="5.3" data-path="tutorial-reading-data-inout.html"><a href="tutorial-reading-data-inout.html#other-packages-for-getting-data-intoout-of-r"><i class="fa fa-check"></i><b>5.3</b> Other packages for getting data into/out of R</a></li>
<li class="chapter" data-level="5.4" data-path="tutorial-reading-data-inout.html"><a href="tutorial-reading-data-inout.html#take-aways-4"><i class="fa fa-check"></i><b>5.4</b> Take Aways</a></li>
<li class="chapter" data-level="5.5" data-path="tutorial-reading-data-inout.html"><a href="tutorial-reading-data-inout.html#additional-tutorials-3"><i class="fa fa-check"></i><b>5.5</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="6" data-path="exercise-1-test-your-knowledge.html"><a href="exercise-1-test-your-knowledge.html"><i class="fa fa-check"></i><b>6</b> Exercise 1: Test your knowledge</a>
<ul>
<li class="chapter" data-level="6.1" data-path="exercise-1-test-your-knowledge.html"><a href="exercise-1-test-your-knowledge.html#task-1"><i class="fa fa-check"></i><b>6.1</b> Task 1</a></li>
<li class="chapter" data-level="6.2" data-path="exercise-1-test-your-knowledge.html"><a href="exercise-1-test-your-knowledge.html#task-2"><i class="fa fa-check"></i><b>6.2</b> Task 2</a></li>
<li class="chapter" data-level="6.3" data-path="exercise-1-test-your-knowledge.html"><a href="exercise-1-test-your-knowledge.html#task-3"><i class="fa fa-check"></i><b>6.3</b> Task 3</a></li>
<li class="chapter" data-level="6.4" data-path="exercise-1-test-your-knowledge.html"><a href="exercise-1-test-your-knowledge.html#task-4"><i class="fa fa-check"></i><b>6.4</b> Task 4</a></li>
<li class="chapter" data-level="6.5" data-path="exercise-1-test-your-knowledge.html"><a href="exercise-1-test-your-knowledge.html#task-5"><i class="fa fa-check"></i><b>6.5</b> Task 5</a></li>
</ul></li>
<li class="chapter" data-level="7" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html"><i class="fa fa-check"></i><b>7</b> Tutorial: Data management with tidyverse</a>
<ul>
<li class="chapter" data-level="7.1" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#why-not-stick-with-base-r"><i class="fa fa-check"></i><b>7.1</b> Why not stick with Base R?</a></li>
<li class="chapter" data-level="7.2" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#tidyverse-packages"><i class="fa fa-check"></i><b>7.2</b> Tidyverse packages</a></li>
<li class="chapter" data-level="7.3" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#tidy-data"><i class="fa fa-check"></i><b>7.3</b> Tidy data</a></li>
<li class="chapter" data-level="7.4" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#the-pipe-operator"><i class="fa fa-check"></i><b>7.4</b> The pipe operator</a></li>
<li class="chapter" data-level="7.5" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#data-transformation-with-dplyr"><i class="fa fa-check"></i><b>7.5</b> Data transformation with dplyr</a>
<ul>
<li class="chapter" data-level="7.5.1" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#select"><i class="fa fa-check"></i><b>7.5.1</b> select()</a></li>
<li class="chapter" data-level="7.5.2" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#filter"><i class="fa fa-check"></i><b>7.5.2</b> filter()</a></li>
<li class="chapter" data-level="7.5.3" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#arrange"><i class="fa fa-check"></i><b>7.5.3</b> arrange()</a></li>
<li class="chapter" data-level="7.5.4" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#mutate"><i class="fa fa-check"></i><b>7.5.4</b> mutate()</a></li>
<li class="chapter" data-level="7.5.5" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#simmarize-group_by"><i class="fa fa-check"></i><b>7.5.5</b> simmarize() [+ group_by()]</a></li>
<li class="chapter" data-level="7.5.6" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#chaining-functions-in-a-pipe"><i class="fa fa-check"></i><b>7.5.6</b> Chaining functions in a pipe</a></li>
</ul></li>
<li class="chapter" data-level="7.6" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#take-aways-5"><i class="fa fa-check"></i><b>7.6</b> Take-Aways</a></li>
<li class="chapter" data-level="7.7" data-path="tutorial-data-management-with-tidyverse.html"><a href="tutorial-data-management-with-tidyverse.html#additional-tutorials-4"><i class="fa fa-check"></i><b>7.7</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="8" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html"><i class="fa fa-check"></i><b>8</b> Exercise 2: Test your knowledge</a>
<ul>
<li class="chapter" data-level="8.1" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html#task-1-1"><i class="fa fa-check"></i><b>8.1</b> Task 1</a></li>
<li class="chapter" data-level="8.2" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html#task-2-1"><i class="fa fa-check"></i><b>8.2</b> Task 2</a></li>
<li class="chapter" data-level="8.3" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html#task-3-1"><i class="fa fa-check"></i><b>8.3</b> Task 3</a></li>
<li class="chapter" data-level="8.4" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html#task-4-1"><i class="fa fa-check"></i><b>8.4</b> Task 4</a></li>
<li class="chapter" data-level="8.5" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html#task-5-1"><i class="fa fa-check"></i><b>8.5</b> Task 5</a></li>
<li class="chapter" data-level="8.6" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html#task-6"><i class="fa fa-check"></i><b>8.6</b> Task 6</a></li>
<li class="chapter" data-level="8.7" data-path="exercise-2-test-your-knowledge.html"><a href="exercise-2-test-your-knowledge.html#task-7"><i class="fa fa-check"></i><b>8.7</b> Task 7</a></li>
</ul></li>
<li class="chapter" data-level="9" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html"><i class="fa fa-check"></i><b>9</b> Tutorial: Data visualization with ggplot</a>
<ul>
<li class="chapter" data-level="9.1" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#why-not-stick-with-base-r-1"><i class="fa fa-check"></i><b>9.1</b> Why not stick with Base R?</a></li>
<li class="chapter" data-level="9.2" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#components-of-a-ggplot-graph"><i class="fa fa-check"></i><b>9.2</b> Components of a ggplot graph</a></li>
<li class="chapter" data-level="9.3" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#installing-activating-ggplot"><i class="fa fa-check"></i><b>9.3</b> Installing & activating ggplot</a></li>
<li class="chapter" data-level="9.4" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#building-your-first-plot"><i class="fa fa-check"></i><b>9.4</b> Building your first plot</a>
<ul>
<li class="chapter" data-level="9.4.1" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#data"><i class="fa fa-check"></i><b>9.4.1</b> Data</a></li>
<li class="chapter" data-level="9.4.2" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#aesthetics"><i class="fa fa-check"></i><b>9.4.2</b> Aesthetics</a></li>
<li class="chapter" data-level="9.4.3" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#geometrics"><i class="fa fa-check"></i><b>9.4.3</b> Geometrics</a></li>
<li class="chapter" data-level="9.4.4" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#scales"><i class="fa fa-check"></i><b>9.4.4</b> Scales</a></li>
<li class="chapter" data-level="9.4.5" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#themes"><i class="fa fa-check"></i><b>9.4.5</b> Themes</a></li>
<li class="chapter" data-level="9.4.6" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#labs"><i class="fa fa-check"></i><b>9.4.6</b> Labs</a></li>
<li class="chapter" data-level="9.4.7" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#facets"><i class="fa fa-check"></i><b>9.4.7</b> Facets</a></li>
<li class="chapter" data-level="9.4.8" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#saving-graphs"><i class="fa fa-check"></i><b>9.4.8</b> Saving graphs</a></li>
</ul></li>
<li class="chapter" data-level="9.5" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#other-common-plot-types"><i class="fa fa-check"></i><b>9.5</b> Other common plot types</a>
<ul>
<li class="chapter" data-level="9.5.1" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#bar-plots"><i class="fa fa-check"></i><b>9.5.1</b> bar plots</a></li>
<li class="chapter" data-level="9.5.2" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#box-plots"><i class="fa fa-check"></i><b>9.5.2</b> box plots</a></li>
</ul></li>
<li class="chapter" data-level="9.6" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#take-aways-6"><i class="fa fa-check"></i><b>9.6</b> Take Aways</a></li>
<li class="chapter" data-level="9.7" data-path="tutorial-data-visualization-with-ggplot.html"><a href="tutorial-data-visualization-with-ggplot.html#additional-tutorials-5"><i class="fa fa-check"></i><b>9.7</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="10" data-path="exercise-3-test-your-knowledge.html"><a href="exercise-3-test-your-knowledge.html"><i class="fa fa-check"></i><b>10</b> Exercise 3: Test your knowledge</a>
<ul>
<li class="chapter" data-level="10.1" data-path="exercise-3-test-your-knowledge.html"><a href="exercise-3-test-your-knowledge.html#task-1-2"><i class="fa fa-check"></i><b>10.1</b> Task 1</a></li>
<li class="chapter" data-level="10.2" data-path="exercise-3-test-your-knowledge.html"><a href="exercise-3-test-your-knowledge.html#task-2-2"><i class="fa fa-check"></i><b>10.2</b> Task 2</a></li>
<li class="chapter" data-level="10.3" data-path="exercise-3-test-your-knowledge.html"><a href="exercise-3-test-your-knowledge.html#task-3-2"><i class="fa fa-check"></i><b>10.3</b> Task 3</a></li>
</ul></li>
<li class="chapter" data-level="11" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html"><i class="fa fa-check"></i><b>11</b> Tutorial: Linear regression</a>
<ul>
<li class="chapter" data-level="11.1" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#knowing-your-data"><i class="fa fa-check"></i><b>11.1</b> Knowing your data</a></li>
<li class="chapter" data-level="11.2" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#visual-inspection-of-linear-trends"><i class="fa fa-check"></i><b>11.2</b> Visual inspection of linear trends</a></li>
<li class="chapter" data-level="11.3" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#pearsons-r"><i class="fa fa-check"></i><b>11.3</b> Pearson´s r</a></li>
<li class="chapter" data-level="11.4" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#ols-regression"><i class="fa fa-check"></i><b>11.4</b> OLS regression</a></li>
<li class="chapter" data-level="11.5" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#standardizing-coefficients"><i class="fa fa-check"></i><b>11.5</b> Standardizing coefficients</a></li>
<li class="chapter" data-level="11.6" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#multiple-regression"><i class="fa fa-check"></i><b>11.6</b> Multiple regression</a></li>
<li class="chapter" data-level="11.7" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#standardized-multiple-regression"><i class="fa fa-check"></i><b>11.7</b> Standardized multiple regression</a></li>
<li class="chapter" data-level="11.8" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#take-aways-7"><i class="fa fa-check"></i><b>11.8</b> Take Aways</a></li>
<li class="chapter" data-level="11.9" data-path="tutorial-linear-regression.html"><a href="tutorial-linear-regression.html#additional-tutorials-6"><i class="fa fa-check"></i><b>11.9</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="12" data-path="exercise-4-test-your-knowledge.html"><a href="exercise-4-test-your-knowledge.html"><i class="fa fa-check"></i><b>12</b> Exercise 4: Test your knowledge</a>
<ul>
<li class="chapter" data-level="12.1" data-path="exercise-4-test-your-knowledge.html"><a href="exercise-4-test-your-knowledge.html#task-1-3"><i class="fa fa-check"></i><b>12.1</b> Task 1</a></li>
<li class="chapter" data-level="12.2" data-path="exercise-4-test-your-knowledge.html"><a href="exercise-4-test-your-knowledge.html#task-2-3"><i class="fa fa-check"></i><b>12.2</b> Task 2</a></li>
<li class="chapter" data-level="12.3" data-path="exercise-4-test-your-knowledge.html"><a href="exercise-4-test-your-knowledge.html#task-3-3"><i class="fa fa-check"></i><b>12.3</b> Task 3</a></li>
<li class="chapter" data-level="12.4" data-path="exercise-4-test-your-knowledge.html"><a href="exercise-4-test-your-knowledge.html#task-4-2"><i class="fa fa-check"></i><b>12.4</b> Task 4</a></li>
<li class="chapter" data-level="12.5" data-path="exercise-4-test-your-knowledge.html"><a href="exercise-4-test-your-knowledge.html#task-5-2"><i class="fa fa-check"></i><b>12.5</b> Task 5</a></li>
<li class="chapter" data-level="12.6" data-path="exercise-4-test-your-knowledge.html"><a href="exercise-4-test-your-knowledge.html#task-6-1"><i class="fa fa-check"></i><b>12.6</b> Task 6</a></li>
</ul></li>
<li class="chapter" data-level="13" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html"><i class="fa fa-check"></i><b>13</b> Tutorial: Mediation analysis</a>
<ul>
<li class="chapter" data-level="13.1" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#introduction-to-mediation"><i class="fa fa-check"></i><b>13.1</b> Introduction to mediation</a></li>
<li class="chapter" data-level="13.2" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#difference-between-mediation-and-moderation"><i class="fa fa-check"></i><b>13.2</b> Difference between mediation and moderation</a></li>
<li class="chapter" data-level="13.3" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#two-step-process-of-mediation"><i class="fa fa-check"></i><b>13.3</b> Two-step process of mediation</a></li>
<li class="chapter" data-level="13.4" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#statistical-representation-and-equations"><i class="fa fa-check"></i><b>13.4</b> Statistical representation and equations</a>
<ul>
<li class="chapter" data-level="13.4.1" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#direct-effect-c"><i class="fa fa-check"></i><b>13.4.1</b> Direct effect <em>c′</em></a></li>
<li class="chapter" data-level="13.4.2" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#indirect-effect-ab"><i class="fa fa-check"></i><b>13.4.2</b> Indirect effect <em>ab</em></a></li>
<li class="chapter" data-level="13.4.3" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#total-effect"><i class="fa fa-check"></i><b>13.4.3</b> Total effect</a></li>
</ul></li>
<li class="chapter" data-level="13.5" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#example"><i class="fa fa-check"></i><b>13.5</b> Example</a>
<ul>
<li class="chapter" data-level="13.5.1" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#knowing-your-data-1"><i class="fa fa-check"></i><b>13.5.1</b> Knowing your data</a></li>
<li class="chapter" data-level="13.5.2" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#visual-inspection-of-linear-trends-1"><i class="fa fa-check"></i><b>13.5.2</b> Visual inspection of linear trends</a></li>
<li class="chapter" data-level="13.5.3" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#pearsons-r-1"><i class="fa fa-check"></i><b>13.5.3</b> Pearson’s r</a></li>
<li class="chapter" data-level="13.5.4" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#fit-models"><i class="fa fa-check"></i><b>13.5.4</b> Fit models</a></li>
<li class="chapter" data-level="13.5.5" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#using-processr"><i class="fa fa-check"></i><b>13.5.5</b> Using processR</a></li>
</ul></li>
<li class="chapter" data-level="13.6" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#take-aways-8"><i class="fa fa-check"></i><b>13.6</b> Take Aways</a></li>
<li class="chapter" data-level="13.7" data-path="tutorial-mediation-analysis.html"><a href="tutorial-mediation-analysis.html#additional-tutorials-7"><i class="fa fa-check"></i><b>13.7</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="14" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html"><i class="fa fa-check"></i><b>14</b> Exercise 5: Test your knowledge</a>
<ul>
<li class="chapter" data-level="14.1" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html#task-1-4"><i class="fa fa-check"></i><b>14.1</b> Task 1</a></li>
<li class="chapter" data-level="14.2" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html#task-2-4"><i class="fa fa-check"></i><b>14.2</b> Task 2</a></li>
<li class="chapter" data-level="14.3" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html#task-3-4"><i class="fa fa-check"></i><b>14.3</b> Task 3</a></li>
<li class="chapter" data-level="14.4" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html#task-4-3"><i class="fa fa-check"></i><b>14.4</b> Task 4</a></li>
<li class="chapter" data-level="14.5" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html#task-5-3"><i class="fa fa-check"></i><b>14.5</b> Task 5</a></li>
<li class="chapter" data-level="14.6" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html#task-6-2"><i class="fa fa-check"></i><b>14.6</b> Task 6</a></li>
<li class="chapter" data-level="14.7" data-path="exercise-5-test-your-knowledge.html"><a href="exercise-5-test-your-knowledge.html#task-7-1"><i class="fa fa-check"></i><b>14.7</b> Task 7</a></li>
</ul></li>
<li class="chapter" data-level="15" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html"><i class="fa fa-check"></i><b>15</b> Tutorial: Moderation analysis</a>
<ul>
<li class="chapter" data-level="15.1" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#introduction-to-moderation"><i class="fa fa-check"></i><b>15.1</b> Introduction to moderation</a></li>
<li class="chapter" data-level="15.2" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#one-step-process-of-moderation"><i class="fa fa-check"></i><b>15.2</b> One-step process of moderation</a></li>
<li class="chapter" data-level="15.3" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#statistical-representation-and-equations-1"><i class="fa fa-check"></i><b>15.3</b> Statistical representation and equations</a></li>
<li class="chapter" data-level="15.4" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#example-1"><i class="fa fa-check"></i><b>15.4</b> Example</a>
<ul>
<li class="chapter" data-level="15.4.1" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#knowing-your-data-2"><i class="fa fa-check"></i><b>15.4.1</b> Knowing your data</a></li>
<li class="chapter" data-level="15.4.2" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#visual-inspection-of-linear-trends-2"><i class="fa fa-check"></i><b>15.4.2</b> Visual inspection of linear trends</a></li>
<li class="chapter" data-level="15.4.3" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#fit-models-1"><i class="fa fa-check"></i><b>15.4.3</b> Fit models</a></li>
<li class="chapter" data-level="15.4.4" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#standardization-and-mean-centering"><i class="fa fa-check"></i><b>15.4.4</b> Standardization and mean-centering</a></li>
<li class="chapter" data-level="15.4.5" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#follow-up-analysis-pobing-the-interaction"><i class="fa fa-check"></i><b>15.4.5</b> Follow-up analysis: Pobing the interaction</a></li>
<li class="chapter" data-level="15.4.6" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#using-processr-1"><i class="fa fa-check"></i><b>15.4.6</b> Using processR</a></li>
</ul></li>
<li class="chapter" data-level="15.5" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#take-aways-9"><i class="fa fa-check"></i><b>15.5</b> Take Aways</a></li>
<li class="chapter" data-level="15.6" data-path="tutorial-moderation-analysis.html"><a href="tutorial-moderation-analysis.html#additional-tutorials-8"><i class="fa fa-check"></i><b>15.6</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="16" data-path="exercise-6-test-your-knowledge.html"><a href="exercise-6-test-your-knowledge.html"><i class="fa fa-check"></i><b>16</b> Exercise 6: Test your knowledge</a>
<ul>
<li class="chapter" data-level="16.1" data-path="exercise-6-test-your-knowledge.html"><a href="exercise-6-test-your-knowledge.html#task-1-5"><i class="fa fa-check"></i><b>16.1</b> Task 1</a></li>
<li class="chapter" data-level="16.2" data-path="exercise-6-test-your-knowledge.html"><a href="exercise-6-test-your-knowledge.html#task-2-5"><i class="fa fa-check"></i><b>16.2</b> Task 2</a></li>
<li class="chapter" data-level="16.3" data-path="exercise-6-test-your-knowledge.html"><a href="exercise-6-test-your-knowledge.html#task-3-5"><i class="fa fa-check"></i><b>16.3</b> Task 3</a></li>
<li class="chapter" data-level="16.4" data-path="exercise-6-test-your-knowledge.html"><a href="exercise-6-test-your-knowledge.html#task-4-4"><i class="fa fa-check"></i><b>16.4</b> Task 4</a></li>
<li class="chapter" data-level="16.5" data-path="exercise-6-test-your-knowledge.html"><a href="exercise-6-test-your-knowledge.html#task-5-4"><i class="fa fa-check"></i><b>16.5</b> Task 5</a></li>
<li class="chapter" data-level="16.6" data-path="exercise-6-test-your-knowledge.html"><a href="exercise-6-test-your-knowledge.html#task-6-3"><i class="fa fa-check"></i><b>16.6</b> Task 6</a></li>
</ul></li>
<li class="chapter" data-level="17" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html"><i class="fa fa-check"></i><b>17</b> Tutorial: CPA and model fit</a>
<ul>
<li class="chapter" data-level="17.1" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html#what-is-cpa"><i class="fa fa-check"></i><b>17.1</b> What is CPA?</a></li>
<li class="chapter" data-level="17.2" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html#fitting-models-with-lavaan"><i class="fa fa-check"></i><b>17.2</b> Fitting models with lavaan</a></li>
<li class="chapter" data-level="17.3" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html#example-evaluate-model-fit-for-complex-models"><i class="fa fa-check"></i><b>17.3</b> Example: Evaluate model fit for complex models</a>
<ul>
<li class="chapter" data-level="17.3.1" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html#theory-driven-hypotheses"><i class="fa fa-check"></i><b>17.3.1</b> Theory-driven hypotheses</a></li>
<li class="chapter" data-level="17.3.2" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html#model-fit-and-evaluation"><i class="fa fa-check"></i><b>17.3.2</b> Model fit and evaluation</a></li>
</ul></li>
<li class="chapter" data-level="17.4" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html#take-aways-10"><i class="fa fa-check"></i><b>17.4</b> Take-Aways</a></li>
<li class="chapter" data-level="17.5" data-path="tutorial-cpa-and-model-fit.html"><a href="tutorial-cpa-and-model-fit.html#additional-tutorials-9"><i class="fa fa-check"></i><b>17.5</b> Additional tutorials</a></li>
</ul></li>
<li class="chapter" data-level="18" data-path="exercise-7-test-your-knowledge.html"><a href="exercise-7-test-your-knowledge.html"><i class="fa fa-check"></i><b>18</b> Exercise 7: Test your knowledge</a>
<ul>
<li class="chapter" data-level="18.1" data-path="exercise-7-test-your-knowledge.html"><a href="exercise-7-test-your-knowledge.html#task-1-6"><i class="fa fa-check"></i><b>18.1</b> Task 1</a></li>
<li class="chapter" data-level="18.2" data-path="exercise-7-test-your-knowledge.html"><a href="exercise-7-test-your-knowledge.html#task-2-6"><i class="fa fa-check"></i><b>18.2</b> Task 2</a></li>
</ul></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html"><i class="fa fa-check"></i>Solutions</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#solutions-for-exercise-1"><i class="fa fa-check"></i>Solutions for Exercise 1</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-1-7"><i class="fa fa-check"></i>Task 1</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-2-7"><i class="fa fa-check"></i>Task 2</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-3-6"><i class="fa fa-check"></i>Task 3</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-4-5"><i class="fa fa-check"></i>Task 4</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-5-5"><i class="fa fa-check"></i>Task 5</a></li>
</ul></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#solutions-for-exercise-2"><i class="fa fa-check"></i>Solutions for Exercise 2</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-1-8"><i class="fa fa-check"></i>Task 1</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-2-8"><i class="fa fa-check"></i>Task 2</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-3-7"><i class="fa fa-check"></i>Task 3</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-4-6"><i class="fa fa-check"></i>Task 4</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-5-6"><i class="fa fa-check"></i>Task 5</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-6-4"><i class="fa fa-check"></i>Task 6</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-7-2"><i class="fa fa-check"></i>Task 7</a></li>
</ul></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#solutions-for-exercise-3"><i class="fa fa-check"></i>Solutions for Exercise 3</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-1-9"><i class="fa fa-check"></i>Task 1</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-2-9"><i class="fa fa-check"></i>Task 2</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-3-8"><i class="fa fa-check"></i>Task 3</a></li>
</ul></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#solutions-for-exercise-4"><i class="fa fa-check"></i>Solutions for Exercise 4</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-1-10"><i class="fa fa-check"></i>Task 1</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-2-10"><i class="fa fa-check"></i>Task 2</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-3-9"><i class="fa fa-check"></i>Task 3</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-4-7"><i class="fa fa-check"></i>Task 4</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-5-7"><i class="fa fa-check"></i>Task 5</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-6-5"><i class="fa fa-check"></i>Task 6</a></li>
</ul></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#solutions-for-exercise-5"><i class="fa fa-check"></i>Solutions for Exercise 5</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-1-11"><i class="fa fa-check"></i>Task 1</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-2-11"><i class="fa fa-check"></i>Task 2</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-3-10"><i class="fa fa-check"></i>Task 3</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-4-8"><i class="fa fa-check"></i>Task 4</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-5-8"><i class="fa fa-check"></i>Task 5</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-6-6"><i class="fa fa-check"></i>Task 6</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-7-3"><i class="fa fa-check"></i>Task 7</a></li>
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<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#solutions-for-exercise-6"><i class="fa fa-check"></i>Solutions for Exercise 6</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-1-12"><i class="fa fa-check"></i>Task 1</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-2-12"><i class="fa fa-check"></i>Task 2</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-3-11"><i class="fa fa-check"></i>Task 3</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-4-9"><i class="fa fa-check"></i>Task 4</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-5-9"><i class="fa fa-check"></i>Task 5</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-6-7"><i class="fa fa-check"></i>Task 6</a></li>
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<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#solutions-for-exercise-7"><i class="fa fa-check"></i>Solutions for Exercise 7</a>
<ul>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-1-13"><i class="fa fa-check"></i>Task 1</a></li>
<li class="chapter" data-level="" data-path="solutions.html"><a href="solutions.html#task-2-13"><i class="fa fa-check"></i>Task 2</a></li>
</ul></li>
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<div id="exercise-3-test-your-knowledge" class="section level1" number="10">
<h1><span class="header-section-number"> 10</span> Exercise 3: Test your knowledge</h1>
<p><strong>After working through Exercise 3, you’ll…</strong></p>
<ul>
<li>be able to see a graph and recreate it with <code>ggplot2</code></li>
<li>be able to see a problem and customize a plot with <code>ggplot2</code> to solve it</li>
</ul>
<div id="task-1-2" class="section level2" number="10.1">
<h2><span class="header-section-number">10.1</span> Task 1</h2>
<p>The data set <em>glbwarm</em> comes pre-installed with the <code>processR</code> package that we will be working with soon. The data comprises 815 US individuals (417 females, 398 males) who agreed to engage in online questionnaires. They roughly represent the population of the United States.</p>
<p>Let’s install / activate the <code>processR</code> package first and assign the glbwarm data to a source object.</p>
<div class="sourceCode" id="cb237"><pre class="sourceCode r"><code class="sourceCode r"><span id="cb237-1"><a href="exercise-3-test-your-knowledge.html#cb237-1" aria-hidden="true" tabindex="-1"></a><span class="co"># installing/loading the package:</span></span>
<span id="cb237-2"><a href="exercise-3-test-your-knowledge.html#cb237-2" aria-hidden="true" tabindex="-1"></a><span class="cf">if</span>(<span class="sc">!</span><span class="fu">require</span>(processR)) {</span>
<span id="cb237-3"><a href="exercise-3-test-your-knowledge.html#cb237-3" aria-hidden="true" tabindex="-1"></a> <span class="fu">install.packages</span>(<span class="st">"processR"</span>); </span>
<span id="cb237-4"><a href="exercise-3-test-your-knowledge.html#cb237-4" aria-hidden="true" tabindex="-1"></a> <span class="fu">require</span>(processR)</span>
<span id="cb237-5"><a href="exercise-3-test-your-knowledge.html#cb237-5" aria-hidden="true" tabindex="-1"></a>} <span class="co">#load / install+load processR</span></span>
<span id="cb237-6"><a href="exercise-3-test-your-knowledge.html#cb237-6" aria-hidden="true" tabindex="-1"></a></span>
<span id="cb237-7"><a href="exercise-3-test-your-knowledge.html#cb237-7" aria-hidden="true" tabindex="-1"></a>data <span class="ot"><-</span> processR<span class="sc">::</span>glbwarm</span></code></pre></div>
<p>Familiarize yourself with the data set (<strong>Hint:</strong> use the <code>help()</code> / <code>?</code> function) and then try to reproduce this plot with <code>dplyr</code> and <code>ggplot2</code>. (<strong>Hint:</strong> You can hide the legend by adding <code>theme(legend.position = "none")</code> to your plot.)</p>
<p><img src="CPA-Seminar_files/figure-html/unnamed-chunk-84-1.png" width="60%" /></p>
</div>
<div id="task-2-2" class="section level2" number="10.2">
<h2><span class="header-section-number">10.2</span> Task 2</h2>
<p>Now, try to reproduce this graph. (<strong>Hint:</strong> You will need to recode the <em>ideology</em> variable in a way that higher values represent stronger attitudes, <em>independent of partisanship</em>.)</p>
<p><img src="CPA-Seminar_files/figure-html/unnamed-chunk-86-1.png" width="60%" /></p>
</div>
<div id="task-3-2" class="section level2" number="10.3">
<h2><span class="header-section-number">10.3</span> Task 3</h2>
<p>Can you make a chart that breaks down the relationship between <em>age</em>, <em>negative emotions about climate change</em>, and <em>ideological extremity</em> for the different <em>sexes</em> AND <em>parties</em>?</p>
<p>When you’re ready to look at the solutions, you can find them here: <a href="solutions.html#solutions-for-exercise-3">Solutions for Exercise 3</a>.</p>
<p>We have officially finished our chapters on data management and visualization! We can move on to data analysis and a new <a href="tutorial-linear-regression.html#tutorial-linear-regression">Tutorial: Linear regression</a>.</p>
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