Christopher A. Rotunno
•Jul 21, 2023
Main effects tell you what each variable does in isolation. Interaction effects tell you whether the combination matters. Here's how to test for both using Python's statsmodels.
A collection of blog posts about interaction effects
Data analytics engineer and BI leader. Building pipelines, models, and dashboards that turn raw data into clear decisions.
Copyright 2026 Christopher A. Rotunno. All Rights Reserved