How to perform Chi-Squared test using SciPy? : Pythoneo

Let’s check how to perform Chi-Squared test using SciPy Python library.

Chi-square calculations

We will see how to calculate chi-squared test based on given numbers set. We will calculate ch-squared test using with scipy library because it offers built-in chisquare function which will do the job.

Chisquare returns pvalue. We can set 5.0% value level to determine if observed deviations are significant.

from scipy import stats

numbers = [45, 67, 33, 54, 33]

chi = stats.chisquare(numbers)

print(f"pvalue equals {round(chi.pvalue, 4)}")
if chi.pvalue < 0.05:
    print("Hypothesis can be rejected")
else:
    print("Hypothesis is valid")