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.
Package details |
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Author | Zhiyong Zhang and Ke-Hai Yuan |
Maintainer | Zhiyong Zhang <johnnyzhz@gmail.com> |
License | GPL |
Version | 0.7.2 |
Package repository | View on CRAN |
Installation |
Install the latest version of this package by entering the following in R:
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