I am looking for a way to compare the results from two lmRob() functions statistically.
Here is an explanation of what I am trying to do: My professor wants me to compare the results of two ANCOVAs (one for each sex) in another ANOVA with each other. This is because there seems to be a significant interaction between my predictor and the covariate sex. But based on my assumptions for the ANCOVAs, I need to use a robust model -> lmRob().
Would it be an option for me to check if confidence intervals of the coefficients overlap for a variable between the two lmRob() models?