
Hi,
I have the following data set:
 Dependent variable (DV)
 Continuous covariate (CO)
 Factor A (2 levels)
 Factor B (2 levels)
After testing for the required assumptions, I am using the following commands to run an ANCOVA:
mod = aov(DV ~ CO *A*B, data)
Anova(mod, type="III")
I have 2 questions:
1) What kind of post doc multi comparisons I have to use if I donâ€™t detect interaction of factor A and B with CO?
2) What kind of post doc multi comparisons I have to use if I detect interaction of factor A and B with CO?
I read a lot of things that did not answer properly to these two questions.
Cold you help me?
