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

Computes sample size for Student's t-test and for the Wilcoxon-Mann-Whitney test for categorical data. The t-test function allows paired and unpaired (balanced / unbalanced) designs as well as homogeneous and heterogeneous variances. The Wilcoxon function allows for ties.

Package details

AuthorRalph Scherer
MaintainerRalph Scherer <>
LicenseGPL (>= 2)
Package repositoryView on CRAN
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samplesize documentation built on May 2, 2019, 5:56 a.m.