a collection of sample size functions

Documentation for package ‘samplesize’ version 0.1-6

samplesize-package	Computes sample size for Student's t-test, Student's t-test with Welch approximation and Wilcoxon-Mann-Whitney test on ordinal data
n.indep.t.test.eq	Sample size for independent Student's t-test with equal group size
n.indep.t.test.neq	Sample size for independent Student's t-test with unequal group size
n.paired.t.test	Sample size for paired Student's t-test
n.welch.test	Sample size for Student's t-test with Welch approximation
n.wilcox.ord	Sample size for Wilcoxon-Mann-Whitney test on ordinal data with and without ties