I'm currently working with 3 different groups (3 disease populations) and I would like to predict which of the three groups they fall into based on a measurement we did. I was thinking that it should be something like multinominal logistic regression but how can I then get a...
I've been doing a 2-way within-subject repeated measures ANOVA and I have some questions:
1) Is it correct that I'm only allowed to do follow-up tests if I see an interaction?
2) Is it acceptable to do t-tests as follow-up tests or should I use something else?