[R-sig-ME] z transform versus random intercept

Daniel Ezra Johnson danielezrajohnson at gmail.com
Thu Dec 3 17:09:49 CET 2009

Is another, perhaps less important, difference that the z-scaling
approach does "handle" (or remove) heteroscedasticity between subjects
- at least in some fashion - whereas an lmer() model with random
intercept would assume that each subject's observations have the same


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