[R-sig-ME] Random slope

fengsj at mail.utexas.edu fengsj at mail.utexas.edu
Fri Jun 11 02:48:36 CEST 2010

I am in the process of selection models. If the random slope for A is  
decided in the model, but the fixed effect of A is not significant. Is  
that ok if I remove fixed A? I don’t feel very comfortable with it.   
Is the random slope like the interaction between the fixed and random  
factor?  If the interaction term is in the model, we better also keep  
all the main effects even if they are not significant. Does it also  
apply in this situation?

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