PythonMachine LearningScipyPandasDjangoNumPy

Chi Square Distribution

Chi Square distribution is used as a basis to verify the hypothesis.

It has two parameters:

  • df - (degree of freedom).
  • size - The shape of the returned array.

Example

Draw out a sample for chi squared distribution with degree of freedom 2 with size 2x3:

from numpy import random

x = random.chisquare(df=2, size=(2, 3))

print(x)

Visualization of Chi Square Distribution

Example

from numpy import random
import matplotlib.pyplot as plt
import seaborn as sns

sns.distplot(random.chisquare(df=1, size=1000), hist=False)

plt.show()

Result:

bionominal distribution