[R-sig-ME] comparing 3 levels of fixed factor in lme4

Obermeier Andrew andrewobermeier at me.com
Mon Jul 30 08:04:53 CEST 2012

In lme4, in models with 3 levels of the fixed factor, each of these gets a t value comparing it to a reference level.

How is this done? 

It is my understanding that the t value can only be used to compare 2 means.

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