## Easy stat 01 : post-hoc test

I like to give my students a question : If we have two class (two mean) to compare, can we use Analysis of Variance (ANOVA)? Most of them will answer, that they should use t-Test.

This is my question every time I teach Generalizability Theory : Can we run a parametric test in non normal distribution data ? As far as I remember, all of them answer NO. Which is NOT TRUE. “You do NOT have to have normally distributed data. Anyone who says so is revealing his ignorance of basic statistical theory” …