[R] Use of step() with an unbalanced ANOVA model

Liaw, Andy andy_liaw at merck.com
Mon Mar 13 04:01:21 CET 2006

This is not really answering your question...  If the data really came from
a designed experiment, I believe `model simplification' is likely


From: Christoph Scherber
> Dear all,
> Is it dangerous to use step() during model simplification 
> when I have an 
> ANOVA design that is unbalanced (i.e. there is order dependence when 
> entering the terms into the full model)?
> Thanks very much for your help!
> Kind regards,
> Christoph
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