Help stats gurus! Am reviewing a paper: N=24 w 7 2x2x2x2 RM anovas reporting 4-way interactions (& no correction for mult comparisons). ISO authoritative source to cite in support of statement that N = 24 is way underpowered for 3 and 4-way within-subject interactions. thx!
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Replying to @BecketTodd
Interpreting fourway interactions is senseless if you haven't also interpreted the (4) threeways, (6) twoways and (4) oneways. That's 15 p-values to interpret. You shouldn't need an authoritative source to see that n=24 is insufficient here. Common sense will do. 1/2
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Replying to @CaAl
And they have all those interactions in 7 different ANOVAs. But I thought common sense would have suggested a) the authors not do it and b) the journal not pass it on to reviewers.
7:37 AM - 29 Jul 2019
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