diff --git a/examples/api/barchart_demo.py b/examples/api/barchart_demo.py
deleted file mode 100644
index e3d89b417752..000000000000
--- a/examples/api/barchart_demo.py
+++ /dev/null
@@ -1,39 +0,0 @@
-
-#!/usr/bin/env python
-# a bar plot with errorbars
-import numpy as np
-import matplotlib.pyplot as plt
-
-N = 5
-menMeans = (20, 35, 30, 35, 27)
-menStd =   (2, 3, 4, 1, 2)
-
-ind = np.arange(N)  # the x locations for the groups
-width = 0.35       # the width of the bars
-
-fig, ax = plt.subplots()
-rects1 = ax.bar(ind, menMeans, width, color='r', yerr=menStd)
-
-womenMeans = (25, 32, 34, 20, 25)
-womenStd =   (3, 5, 2, 3, 3)
-rects2 = ax.bar(ind+width, womenMeans, width, color='y', yerr=womenStd)
-
-# add some text for labels, title and axes ticks
-ax.set_ylabel('Scores')
-ax.set_title('Scores by group and gender')
-ax.set_xticks(ind+width)
-ax.set_xticklabels( ('G1', 'G2', 'G3', 'G4', 'G5') )
-
-ax.legend( (rects1[0], rects2[0]), ('Men', 'Women') )
-
-def autolabel(rects):
-    # attach some text labels
-    for rect in rects:
-        height = rect.get_height()
-        ax.text(rect.get_x()+rect.get_width()/2., 1.05*height, '%d'%int(height),
-                ha='center', va='bottom')
-
-autolabel(rects1)
-autolabel(rects2)
-
-plt.show()
diff --git a/examples/api/fahrenheit_celsius_scales.py b/examples/api/fahrenheit_celsius_scales.py
deleted file mode 100644
index 72a52f4fa41b..000000000000
--- a/examples/api/fahrenheit_celsius_scales.py
+++ /dev/null
@@ -1,27 +0,0 @@
-"""
-Show how to display two scales on the left and right y axis -- Fahrenheit and Celsius
-"""
-
-import matplotlib.pyplot as plt
-
-fig, ax1 = plt.subplots()  # ax1 is the Fahrenheit scale
-ax2 = ax1.twinx()          # ax2 is the Celsius scale
-
-def Tc(Tf):
-    return (5./9.)*(Tf-32)
-
-
-def update_ax2(ax1):
-   y1, y2 = ax1.get_ylim()
-   ax2.set_ylim(Tc(y1), Tc(y2))
-   ax2.figure.canvas.draw()
-
-# automatically update ylim of ax2 when ylim of ax1 changes.
-ax1.callbacks.connect("ylim_changed", update_ax2)
-ax1.plot([78, 79, 79, 77])
-
-ax1.set_title('Two scales: Fahrenheit and Celsius')
-ax1.set_ylabel('Fahrenheit')
-ax2.set_ylabel('Celsius')
-
-plt.show()
diff --git a/examples/statistics/barchart_demo.py b/examples/statistics/barchart_demo.py
new file mode 100644
index 000000000000..f16f695c61b1
--- /dev/null
+++ b/examples/statistics/barchart_demo.py
@@ -0,0 +1,13 @@
+"""
+Demo of multiple bar plots.
+"""
+import matplotlib.pyplot as plt
+
+values = (20, 35, 30, 35, 27)
+pos = (0, 1, 2, 3, 4)
+
+plt.bar(left=pos, height=values, width=0.5, color='r')
+
+plt.title('Example of bar plots')
+
+plt.show()
diff --git a/examples/statistics/barchart_demo_error.py b/examples/statistics/barchart_demo_error.py
new file mode 100644
index 000000000000..3cf07b9bdf35
--- /dev/null
+++ b/examples/statistics/barchart_demo_error.py
@@ -0,0 +1,14 @@
+"""
+Demo of multiple bar plot with errorbars
+"""
+import matplotlib.pyplot as plt
+
+values = (20, 35, 30, 35, 27)
+errors = (2, 3, 4, 1, 2)
+pos = (0, 1, 2, 3, 4)
+
+plt.bar(left=pos, height=values, width=0.5, color='r', yerr=errors)
+
+plt.title("Bar plot with errors")
+
+plt.show()
diff --git a/examples/subplots_axes_and_figures/fahrenheit_celsius_scales.py b/examples/subplots_axes_and_figures/fahrenheit_celsius_scales.py
new file mode 100644
index 000000000000..2318f1678671
--- /dev/null
+++ b/examples/subplots_axes_and_figures/fahrenheit_celsius_scales.py
@@ -0,0 +1,37 @@
+"""
+Demo of how to display two scales on the left and right y axis.
+
+This example uses the Fahrenheit and Celsius scales.
+"""
+import matplotlib.pyplot as plt
+import numpy as np
+
+
+def fahrenheit2celsius(temp):
+    """
+    Returns temperature in Celsius.
+    """
+    return (5. / 9.) * (temp - 32)
+
+
+def convert_ax_c_to_celsius(ax_f):
+    """
+    Update second axis according with first axis.
+    """
+    y1, y2 = ax_f.get_ylim()
+    ax_c.set_ylim(fahrenheit2celsius(y1), fahrenheit2celsius(y2))
+    ax_c.figure.canvas.draw()
+
+fig, ax_f = plt.subplots()
+ax_c = ax_f.twinx()
+
+# automatically update ylim of ax2 when ylim of ax1 changes.
+ax_f.callbacks.connect("ylim_changed", convert_ax_c_to_celsius)
+ax_f.plot(np.linspace(-40, 120, 100))
+ax_f.set_xlim(0, 100)
+
+ax_f.set_title('Two scales: Fahrenheit and Celsius')
+ax_f.set_ylabel('Fahrenheit')
+ax_c.set_ylabel('Celsius')
+
+plt.show()