Hi experts,
Is it possible to randomly permute exchangeability blocks in a simple regression glm? if so, how can this be accomplished? Basically, I would like to run my model with 1000 permutations, where each permutation consists of a random reshuffling of observation order (i.e. akin to running R's sample function on the predicted values in the model). The purpose is to generate a null distribution from voxel-wise testing.
Thanks,
Derek
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