ANOVA in Python
Pre-ANOVA testing
Levene test
A test which sees if the variance found in each group / sample is equal to that of the other ones.
Input: quantitative variables - 2+
Which test(s) are we hoping to perform later:
- One-way ANOVA
- T-test for independent samples
Why is the Levene test important?
If the each group / sample has a large difference in their sample sizes, you need to make sure that the varience in each group are roughly the same. This is called homogeneity. Without homogeneous variances between groups of different sizes, the ANOVA could give you a false result of significance1.
References
1.
Berg RG van den. Levene’s test (statistics) - the ultimate guide. SPSS tutorials. Published 2023. https://www.spss-tutorials.com/levenes-test-in-spss/
Citation
BibTeX citation:
@online{mishra2026,
author = {Mishra, Pranav},
title = {ANOVA in {Python}},
date = {2026-02-17},
url = {https://pranavmishra90.github.io/open-notebook/data-analysis/statistics/anova.html},
langid = {en-US}
}
For attribution, please cite this work as:
Mishra P. ANOVA in Python. Published February
17, 2026. https://pranavmishra90.github.io/open-notebook/data-analysis/statistics/anova.html