Python Business Intelligence Cookbook

Plotting the data as a probability distribution

Plotting our data in a histogram as a probability distribution tells matplotlib to integrate the total area of the histogram, and scale the values appropriately. Rather than showing how many values go into each bin as in the previous recipe, we'll have the probability of finding a number in the bin.

How to do it…

1. To create a probability distribution for a single column in a Pandas DataFrame, begin by importing all the required libraries. To show the matplotlib plots in IPython Notebook, we will use an IPython magic function which starts with %:

   %matplotlib inline
   import pandas as pd
   import numpy as np
   from pymongo import MongoClient
   import matplotlib as mpl
   import matplotlib.pyplot as plt

2. Next, connect ...