How to plot Histogram in Python

In this article, we will see how to plot histogram in Python using Matplotlib.

#1 : Install Matplotlib

If you don’t have Matplotlib installed in your system, use following command to do so.

pip install matplotlib

#2 : Collect the data for the histogram

For example, let’s say that you have the following data about the age of 100 individuals:

#3: Determine the number of bins

Next determine the number of bins to be used for the histogram.

For ease of understanding, let’s set the number of bins to 10.

#4 : Plot the histogram in Python using matplotlib

import matplotlib.pyplot as plt

x = [1,1,2,3,3,5,7,8,9,10,
     10,11,11,13,13,15,16,17,18,18,
     18,19,20,21,21,23,23,24,25,25,
     25,25,26,26,26,27,27,27,27,27,
     29,30,30,31,33,34,34,34,35,36,
     36,37,37,38,38,38,40,41,41,42,
     43,44,45,45,46,47,48,48,49,50,
     51,52,53,54,55,55,55,57,58,60,
     61,62,64,65,66,68,70,71,72,74,
     75,77,81,83,84,85,89,90,90,99]

plt.hist(x, bins=10)
plt.show()

Output: