Man pages for samplesize
Sample Size Calculation for Various t-Tests and Wilcoxon-Test

n.ttestn.ttest computes sample size for paired and unpaired t-tests.
n.wilcox.ordSample size for Wilcoxon-Mann-Whitney for ordinal data
samplesize-packageComputes sample size for several two-sample tests
samplesize documentation built on May 29, 2017, 6:59 p.m.