For moderately non-normal repeated weight data with baseline differences, should I use RM ANOVA (with Greenhouse–Geisser) or a non-parametric test?

I have weight data from 4 animal groups measured at multiple time points. Some data at 2 time points is moderately non-normal. Should I still use repeated measures ANOVA with Greenhouse–Geisser...

08 July 2025 5,120 3 View