Effect Sizes and Power for Interactions in ANOVA Designs
Daniel Lakens (noreply@blogger.com)
Based on our recent paper explaining power analysis for ANOVA designs, in this post I want provide a step-by-step mathematical overview of power analysis for interactions. These details often do not make it into tutorial papers because of word limitations, and few good free resources are available (for a paid resource worth your money, see Maxwell, Delaney, & Kelley, 2018 ). This post is a bit technical, but nothing in this post requires more knowedge than multiplying and dividing numbers, and I