covariate in GLMM
If I want to include a covariate in my model, which I am running using the GLMM add-in because the data are not normally distributed and I want to use a Poisson distribution option - is the covariate included as a fixed or random effect? I know when using the standard "fit model" I do not specify that the covariate has a random attribute, which is why I wasn't sure how to include it in the GLMM mo...