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

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Kai
April 13, 2015 02:47PM
The above Mean (mean of Group A = 0.095, mean of Group B = 0.045) was from the afni plot.

Actually when I checked these mean values using 3dMean or taking the sub brick of the 3dttest, the mean values are identical as those from the independent two sample t test ( mean of Group A = 0.117, mean of Group B = 0.057, df =30 ).

The difference is t score. t from independent two sample t test in that ROI is 2.0881, t from the 3dttest++ within the same ROI is 1.839.

I wonder whey these two t scores are different.

Sorry for the confusing.

Thank you.

Kai
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Subject Author Posted

3dROIstats

Kai April 13, 2015 11:48AM

Re: 3dROIstats

Kai April 13, 2015 02:47PM

Re: 3dROIstats

ziad April 13, 2015 05:26PM

Re: 3dROIstats

rick reynolds April 14, 2015 12:58AM

Re: 3dROIstats

Kai April 14, 2015 10:25AM