[R] General question about GLMM and heterogeneity of variance

[GibsonR]

Sorry, I was not particularly clear.

 I ran my data through a GLM (the response variable is a proportion, and I
ignored the random effects for the purposes of data exploration), and
plotted the residuals against each of my predictor variables (some of which
are continuous, some categorical). The heterogeneity showed up in the
residuals of the response variable plotted against a categorical predictor
variable (Insect functional group).

Do I need to use something other than the GLMM in this case?

Thank you very much for your help.



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