AFNI Message Board

Dear AFNI users-

We are very pleased to announce that the new AFNI Message Board framework is up! Please join us at:

https://discuss.afni.nimh.nih.gov

Existing user accounts have been migrated, so returning users can login by requesting a password reset. New users can create accounts, as well, through a standard account creation process. Please note that these setup emails might initially go to spam folders (esp. for NIH users!), so please check those locations in the beginning.

The current Message Board discussion threads have been migrated to the new framework. The current Message Board will remain visible, but read-only, for a little while.

Sincerely, AFNI HQ

History of AFNI updates  

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May 06, 2011 09:49AM
Hi Jodi,

We just submitted a manuscript that mentioned the issue of direct t-tests versus omnibus F-test guided method, so we may receive a similar repercussion to what you just did. :)

To pacify the reviewers, you may consider running ANOVA. If no inconsistency occurs, all is good. There are two possibilities that may show up: 1) F-test is significant, but none of the individual t-tests; 2) F-test is not significant, but at least one t-test is. These two cases are not expected to occur often, but if they do, it may indicate something worth further investigation, such as violation of the assumptions in ANOVA.

Hope this helps,
Gang
Subject Author Posted

3dANOVA3 with uneven sample sizes

philippe goldin June 11, 2010 07:07PM

Re: 3dANOVA3 with uneven sample sizes

Gang Chen June 14, 2010 01:48PM

Re: 3dANOVA3 with uneven sample sizes

bob cox June 14, 2010 01:57PM

Re: 3dANOVA3 with uneven sample sizes

philippe goldin June 14, 2010 06:49PM

Re: 3dANOVA3 with uneven sample sizes

Matt Weber June 22, 2011 03:27PM

Re: 3dANOVA3 with uneven sample sizes

Gang Chen June 22, 2011 04:34PM

Re: 3dANOVA3 with uneven sample sizes

Sean Drummond July 20, 2010 12:03PM

Re: 3dANOVA3 with uneven sample sizes

Gang Chen July 20, 2010 10:09PM

Re: 3dANOVA3 with uneven sample sizes

Matt Weber September 14, 2010 05:09PM

Re: 3dANOVA3 with uneven sample sizes

Gang Chen September 14, 2010 06:39PM

Re: 3dANOVA3 with uneven sample sizes

Matt Weber September 15, 2010 11:02AM

Re: 3dANOVA3 with uneven sample sizes

Gang Chen September 15, 2010 03:52PM

Re: 3dANOVA3 with uneven sample sizes

Matt Weber September 15, 2010 04:29PM

Re: 3dANOVA3 with uneven sample sizes

yangjiepsy August 07, 2015 01:19AM

Re: 3dANOVA3 with uneven sample sizes

Christopher Bell September 22, 2010 06:44PM

Re: 3dANOVA3 with uneven sample sizes

Gang Chen September 23, 2010 11:44AM

Re: 3dANOVA3 with uneven sample sizes

Christopher Bell September 23, 2010 11:58AM

Re: 3dANOVA3 with uneven sample sizes

Jodi May 05, 2011 04:27PM

Re: 3dANOVA3 with uneven sample sizes

Gang Chen May 06, 2011 09:49AM

A question about 3dANOVA3 with uneven sample sizes

yangjiepsy August 07, 2015 10:15AM

Re: A question about 3dANOVA3 with uneven sample sizes

gang August 07, 2015 10:28AM

Re: A question about 3dANOVA3 with uneven sample sizes

yangjiepsy August 07, 2015 09:18PM