Hello!
I’ve performed a paired test via 3dMEMA and received the following warning:
++ Smallest FDR q [1 negative_minus_regulation:t] = 0.0417078
*+ WARNING: Smallest FDR q [3 QE:Chisq] = 0.671929 ==> few true single voxel detections
What does it mean that the Chi^2 has a high FDR while the FDR for the t-statistics are good enough?
Thank you!
What does it mean that the Chi^2 has a high FDR while the FDR for the t-statistics are good enough?
The Chi^2 tests the hypothesis of cross-subject variance tau^2 = 0. It seems that you don’t a huge number of voxels with high cross-subject variability.
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