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samplesize.etasq
samplesize.etasq(k, delta, power=.80, sig.level=.05)
ind.oneway
ind.oneway.second
##Cohen (1988) ex.8.10 f <- .25 samplesize.etasq(k=4, delta= f^2/(1+f^2), power=.80, sig.level=.05)
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