diff --git a/docs/src/developers_guide/contributing_documentation_full.rst b/docs/src/developers_guide/contributing_documentation_full.rst
index 41314e80ac..44c75ed279 100755
--- a/docs/src/developers_guide/contributing_documentation_full.rst
+++ b/docs/src/developers_guide/contributing_documentation_full.rst
@@ -149,6 +149,9 @@ If there is a particularly troublesome module that breaks the ``make html`` you
 can exclude the module from the API documentation.  Add the entry to the
 ``exclude_modules`` tuple list in the
 ``docs/src/sphinxext/generate_package_rst.py`` file.
+If you want to avoid adding all methods of a parent class to a subclass, you
+can add that class to the ``classes_no_inherited_members`` list at the top of
+the ``docs/src/sphinxext/generate_package_rst.py`` file.
 
 
 .. _contributing.documentation.gallery:
diff --git a/docs/src/sphinxext/generate_package_rst.py b/docs/src/sphinxext/generate_package_rst.py
index 8f4119944f..b50403b901 100644
--- a/docs/src/sphinxext/generate_package_rst.py
+++ b/docs/src/sphinxext/generate_package_rst.py
@@ -17,6 +17,12 @@
 ]
 
 
+# List of classes for which no inherited members are shown
+classes_no_inherited_members = [
+    "iris.analysis.Weights",  # avoid showing all methods of np.ndarray
+]
+
+
 # print to stdout, including the name of the python file
 def autolog(message):
     print("[{}] {}".format(ntpath.basename(__file__), message))
@@ -32,7 +38,7 @@ def autolog(message):
     .. autoclass:: {object_name}
         :members:
         :undoc-members:
-        :inherited-members:
+        {inherited_members_setting}
 
 """,
     "function": """
@@ -160,10 +166,16 @@ def sort_key(arg):
     lines = []
     for element, obj in document_these:
         object_name = import_name + "." + element
+        if object_name in classes_no_inherited_members:
+            inherited_members_setting = ":no-inherited-members:"
+        else:
+            inherited_members_setting = ":inherited-members:"
         obj_content = document_dict[lookup_object_type(obj)].format(
+            inherited_members_setting=inherited_members_setting,
             object_name=object_name,
             object_name_header_line="+" * len(object_name),
             object_docstring=inspect.getdoc(obj),
+
         )
         lines.append(obj_content)
 
diff --git a/docs/src/userguide/cube_statistics.rst b/docs/src/userguide/cube_statistics.rst
index 79478e4ac6..9dc21f91b5 100644
--- a/docs/src/userguide/cube_statistics.rst
+++ b/docs/src/userguide/cube_statistics.rst
@@ -141,8 +141,8 @@ These areas can now be passed to the ``collapsed`` method as weights:
             altitude                         -                      x
         Scalar coordinates:
             forecast_reference_time     2009-11-19 04:00:00
-            grid_latitude               1.5145501 degrees, bound=(0.14430022, 2.8848) degrees
-            grid_longitude              358.74948 degrees, bound=(357.494, 360.00497) degrees
+            grid_latitude               1.5145501 degrees, bound=(0.13755022, 2.89155) degrees
+            grid_longitude              358.74948 degrees, bound=(357.48724, 360.01172) degrees
             surface_altitude            399.625 m, bound=(-14.0, 813.25) m
         Cell methods:
             mean                        grid_longitude, grid_latitude