Welcome to cocron!
This is a website allowing to conduct statistical comparisons between Cronbach alpha coefficients. Click "Start analysis" to begin!
The calculations rely on the tests implemented in the package cocron for the R programming language. An article describing cocron and the cocron R package documentation are available.
You can integrate the R code generated by this web interface in your own R script. To do so, you can download the cocron package from here or r-project.org. Alternatively, you can type one of the following commands in the R console to install:
# alternative repository
install.packages("cocron", lib="/my/own/R-packages/", repo="http://comparingcronbachalphas.org/repo")
The cocron package also includes a GUI extension for the R front-end RKWard, which you can use instead of this web interface.
Are the Cronbach alphas based on independent or on dependent groups? (If the data were taken from measurements of the same individuals, the groups are dependent.)
|Cronbach's alpha||Sample size||Item count|