Message-ID: <200306201735.41239.chrysopa@insecta.ufv.br>
Date: 2003-06-20T20:35:41Z
From: Ronaldo Reis Jr.
Subject: [OFF] stepwise using REML???
Hi,
I know that is not possible make a stepwise procedure using REML in R, I can
use ML for this.
For nested design it may be very dangerous due the difference in variance
structure, mainly in a splitplot design. ML make significative variables that
REML dont make.
I read an article that is made a stepwise procedure using GENSTAT.
from article:
"Terms were dropped from a model in a stepwise procedure by assessing the
change in deviance between the full model and the submodel."
All are made using REML.
It is possible?! I dont know GENSTAT.
Thanks
Ronaldo
--
aquadextrous, adj.:
Possessing the ability to turn the bathtub faucet on and off
with your toes.
-- Rich Hall, "Sniglets"
--
| // | \\ [***********************************]
|> ( ? ? ) [Ronaldo Reis J?nior ]
| V [UFV/DBA-Entomologia ]
|> / \ [36571-000 Vi?osa - MG ]
| /(.''`.)\ [Fone: 31-3899-2532 ]
|>/(: :' :)\ [chrysopa at insecta.ufv.br ]
|/ (`. `'` ) \[ICQ#: 5692561 | LinuxUser#: 205366 ]
|> ( `- ) [***********************************]
|>> _/ \_Powered by GNU/Debian Woody/Sarge