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coefficientalpha  

Robust Coefficient Alpha and Omega with Missing and Non-Normal Data
View on CRAN: Click here


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

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

Install by package version:
library("remotes")
install_version("coefficientalpha", "0.7.2")



Attach the package and use:
library("coefficientalpha")
Maintained by
Zhiyong Zhang
[Scholar Profile | Author Map]
All associated links for this package
First Published: 2013-04-13
Latest Update: 2023-08-27
Description:
Cronbach's alpha and McDonald's omega are widely used reliability or internal consistency measures in social, behavioral and education sciences. Alpha is reported in nearly every study that involves measuring a construct through multiple test items. The package 'coefficientalpha' calculates coefficient alpha and coefficient omega with missing data and non-normal data. Robust standard errors and confidence intervals are also provided. A test is also available to test the tau-equivalent and homogeneous assumptions. Since Version 0.5, the bootstrap confidence intervals were added.
How to cite:
Zhiyong Zhang (2013). coefficientalpha: Robust Coefficient Alpha and Omega with Missing and Non-Normal Data. R package version 0.7.2, https://cran.r-project.org/web/packages/coefficientalpha. Accessed 28 Oct. 2026.
Previous versions and publish date:
(2026-07-09 07:27), 0.2.5 (2013-04-13 07:01), 0.2.6 (2013-04-25 15:44), 0.3.2 (2014-11-14 08:16), 0.3.3 (2014-12-10 21:24), 0.5 (2015-05-31 12:53), 0.7.1 (2023-08-26 19:00), 0.7 (2020-04-22 06:50)
Other packages that cited coefficientalpha R package
View coefficientalpha citation profile
Other R packages that coefficientalpha depends, imports, suggests or enhances
Complete documentation for coefficientalpha
Functions, R codes and Examples using the coefficientalpha R package
Some associated functions: alpha . bootstrap . coefficientalpha-package . example . plot.alpha . summary.alpha . tau.test . 
Some associated R codes: Cronbach.R .  Full coefficientalpha package functions and examples
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