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samplesize  

Sample Size Calculation for Various t-Tests and Wilcoxon-Test
View on CRAN: Click here


Download and install samplesize package within the R console
Install from CRAN:
install.packages("samplesize")

Install from Github:
library("remotes")
install_github("cran/samplesize")

Install by package version:
library("remotes")
install_version("samplesize", "0.2-4")



Attach the package and use:
library("samplesize")
Maintained by
Ralph Scherer
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2010-01-10
Latest Update: 2016-12-24
Description:
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.
How to cite:
Ralph Scherer (2010). samplesize: Sample Size Calculation for Various t-Tests and Wilcoxon-Test. R package version 0.2-4, https://cran.r-project.org/web/packages/samplesize. Accessed 30 Oct. 2026.
Previous versions and publish date:
(2026-07-09 07:01), 0.1-5 (2010-01-10 09:04), 0.1-6 (2010-01-12 12:17), 0.1-7 (2010-03-19 17:17), 0.1-8 (2012-08-22 15:38), 0.2-2 (2015-07-01 06:11)
Other packages that cited samplesize R package
View samplesize citation profile
Other R packages that samplesize depends, imports, suggests or enhances
Complete documentation for samplesize
Functions, R codes and Examples using the samplesize R package
Some associated functions: n.ttest . n.wilcox.ord . samplesize-package . 
Some associated R codes: n.ttest.R . n.wilcox.ord.R .  Full samplesize package functions and examples
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