Re: SE fo constrain 'sum to zero' fixed effect

From: <brian.cullis_at_DPI.NSW.GOV.AU>
Date: Mon, 4 May 2009 22:56:25 +1000

Dear all
sorry for the posting as I had not seen Arthur's response. I agree with

Many statisticians dislike looking at such effects and consider it is
more sensible to look at estimable contrasts such as D vs

and hence my request for the example to see what the context was

warm regards

Brian Cullis
Research Leader, Biometrics &
Senior Principal Research Scientist
NSW Department of Primary Industries
Wagga Wagga Agricultural Institute

Visiting Professorial Fellow
School of Mathematics and Applied Statistics
Faculty of Informatics
University of Wollongong

Faculty of Agriculture, Food & Natural Resources
The University of Sydney

Adjunct Professor
School of Computing and Mathematics
Charles Sturt University

Phone: 61 2 6938 1855
Fax: 61 2 6938 1809
Mobile: 0439 448 591
Received on Tue May 04 2009 - 22:56:25 EST

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