the red "down" arrow for my fixed effects variable in my repeated measures regression is "greyed out" and not functioning - what am I doing wrong?
I am conducting a mixed effects, repeated measures linear regression with JMP Pro 18 Student version. I have one random effect and one fixed effect with full factorial modelling. The model included effects leverage with the restricted maximum likelihood method. When I run the model, I get no errors and my overall results look sensible....... but when I click on the down arrow for the fixed effect...