coefficientalpha: Robust Coefficient Alpha and Omega with Missing and Non-Normal Data

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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. Version 0.5 added the bootstrap confidence intervals.

Author
Zhiyong Zhang and Ke-Hai Yuan
Date of publication
2015-05-31 12:53:35
Maintainer
Zhiyong Zhang <johnnyzhz@gmail.com>
License
GPL
Version
0.5

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Man pages

alpha
Robust Cronbach's alpha and McDonald's omega
bootstrap
Bootstrap se and CI for alpha and omega
coefficientalpha-package
Robust Cronbach's alpha and McDonald's omega with missing and...
example
An example data set
plot.alpha
Alpha/Omega related plot
summary.alpha
Print alpha/omega and its confidence interval.
tau.test
Test the tau-equivalence and the homogeneity of items

Files in this package

coefficientalpha
coefficientalpha/inst
coefficientalpha/inst/doc
coefficientalpha/inst/doc/manual.pdf
coefficientalpha/NAMESPACE
coefficientalpha/data
coefficientalpha/data/example.txt.gz
coefficientalpha/R
coefficientalpha/R/Cronbach.R
coefficientalpha/MD5
coefficientalpha/DESCRIPTION
coefficientalpha/man
coefficientalpha/man/bootstrap.Rd
coefficientalpha/man/tau.test.Rd
coefficientalpha/man/coefficientalpha-package.Rd
coefficientalpha/man/plot.alpha.Rd
coefficientalpha/man/alpha.Rd
coefficientalpha/man/summary.alpha.Rd
coefficientalpha/man/example.Rd