samplesize-package: Computes sample size for several two-sample tests

Description Details Author(s) References


Computes sample size for independent and paired Student's t-test, Student's t-test with Welch-approximation, Wilcoxon-Mann-Whitney test with and without ties on ordinal data


Package: samplesize
Type: Package
Version: 0.2-4
Date: 2016-12-22
License: GPL (>=2)
LazyLoad: yes

n.ttest(): sample size for Student's t-test and t-test with Welch approximation

n.wilcox.ord(): sample size for Wilcoxon-Mann-Whitney test with and without ties


Ralph Scherer

Maintainer: Ralph Scherer <[email protected]>


Bock J., Bestimmung des Stichprobenumfangs fuer biologische Experimente und kontrollierte klinische Studien. Oldenbourg 1998

Zhao YD, Rahardja D, Qu Yongming. Sample size calculation for the Wilcoxon-Mann-Whitney test adjusting for ties. Statistics in Medicine 2008; 27:462-468

samplesize documentation built on May 29, 2017, 6:59 p.m.