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A situation where the effect of an explanatory variable may depend on the value of another explanatory variable.

1 vote

R: Power analysis for a 2 by 2 within-within ANOVA interaction effect [pwr::pwr.f2.test()]

I think that all of the ANOVA functions in pwr are 1-way. If you have the right data, you should be able to do your calculation using Superpower. It's available as an R package and a shiny app (which …
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