Posted by
Maguin, Eugene on
Aug 22, 2011; 1:25pm
URL: http://spssx-discussion.165.s1.nabble.com/fixed-effect-with-ancova-tp4713723p4723476.html
Ro,
Thank you for posting your syntax. Ok, now I understand why you keep
referring to a covariate. What is longcms?
I'd like to see something else. Please run this syntax and post the
resulting table to the list.
Means logpeso BY dieta by tanque/cells=count mean stddev.
I thing there is something extremely odd going on. I assume that fish were
randomly assigned to tank and diet (or, you had a big tank of fish and you
caught 360 and put them in the 24 tanks). I'd expect that the tank effect
would be not significant and near 0.0 in magnitude. Likewise, the
interaction. As I understand it, you aren't getting that. So, it's past time
to look at the summary data (cell statistics).
Gene Maguin
-----Original Message-----
From: SPSSX(r) Discussion [mailto:
[hidden email]] On Behalf Of ro
Sent: Friday, August 19, 2011 5:04 PM
To:
[hidden email]
Subject: Re: fixed effect with ancova
sorry thi was the genstat command, this is the spss command:
UNIANOVA logpeso BY dieta tanque WITH longcms
/METHOD=SSTYPE(3)
/INTERCEPT=INCLUDE
/PRINT=HOMOGENEITY DESCRIPTIVE
/CRITERIA=ALPHA(.05)
/DESIGN=dieta tanque longcms.
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