mr.mgh.harvard.edu]
Sent: Thursday, July 16, 2009 11:30 AM
To: Zhang, Xiaochu (NIH/NIDA) [F]
Cc: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] ANOVA and co-variable
Hi Zhang, when reporting a bug or problem, please refer to the following
suggestions in terms of what info
al Message-
From: Douglas N Greve [mailto:gr...@nmr.mgh.harvard.edu]
Sent: Thursday, July 16, 2009 11:30 AM
To: Zhang, Xiaochu (NIH/NIDA) [F]
Cc: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] ANOVA and co-variable
Hi Zhang, when reporting a bug or problem, please refer to the following
s
200 (NIDA)
Baltimore MD
21224
Tel: 443-740-2619
-Original Message-
From: Douglas N Greve [mailto:gr...@nmr.mgh.harvard.edu]
Sent: Wednesday, July 15, 2009 12:31 PM
To: Zhang, Xiaochu (NIH/NIDA) [F]
Cc: freesurfer@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] ANOVA and co-variable
@nmr.mgh.harvard.edu
Subject: Re: [Freesurfer] ANOVA and co-variable
yes, that is correct. Make sure to handle the mean/offset of C in a rational
way. The simple, though somewhat incorrect, way is to simply demean C. Better
to pick a fixed value of C to test it at. If this is what you do, let's say you
yes, that is correct. Make sure to handle the mean/offset of C in a
rational way. The simple, though somewhat incorrect, way is to simply
demean C. Better to pick a fixed value of C to test it at. If this is
what you do, let's say you test at C=2, then your contrast would be:
0.5 -0.5 -0.5 0.5
Hi Freesurfer experts,
I want to do a group ANOVA analysis with one co-variable. I have read the
corresponding wiki but still have some problems. I need your help.
I have 4 group subjects (A1B1, A1B2, A2B1, A2B2) and one co-vaiable (C).
I want to get the interaction between A and B. However, bec
