size.ci.lc.mean.ws | R Documentation |
Computes sample size required to estimate a linear contrast of population means with desired precision in a within-subjects design.
alpha |
alpha level for 1-alpha confidence |
var |
planning value of largest DV variance |
cor |
planning value of smallest correlation |
w |
desired confidence interval width |
h |
vector of contrast coefficients |
n |
required sample size |
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