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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April 24, 2014 06:17PM
> I want to know if I need to do the fisher-z translate for the correlation coefficient.

The transformation is usually recommended to meet the normality assumption of the Student's t-test. You can do so with the following command:

3dcalc -a Corr_subj01R+tlrc -expr 'log((1+a)/(1-a))/2' -prefix Corr_subj01_Z

Gang
Subject Author Posted

In the following condition, if I need to do fisher-z translate before do the 3dttest++?

Linda April 24, 2014 10:27AM

Re: In the following condition, if I need to do fisher-z translate before do the 3dttest++?

gang April 24, 2014 06:17PM

Re: In the following condition, if I need to do fisher-z translate before do the 3dttest++?

Emperor Zhark April 24, 2014 09:33PM