Editing Cronbach's alpha (section)

====Software for SEM-based reliability coefficients====
General-purpose statistical software such as [[SPSS]] and [[SAS (software)|SAS]] include a function to calculate <math>\rho_T</math>. Users who don't know the formula <math>\rho_T</math> have no problem in obtaining the estimates with just a few mouse clicks.

SEM software such as AMOS, [[LISREL]], and MPLUS does not have a function to calculate SEM-based reliability coefficients. Users need to calculate the result by inputting it to the formula. To avoid this inconvenience and possible error, even studies reporting the use of SEM rely on <math>\rho_T</math> instead of SEM-based reliability coefficients.<ref name = Cho/> There are a few alternatives to automatically calculate SEM-based reliability coefficients.

# [[R (programming language)|R]] (free): The psych package<ref>{{cite web|title=An overview of the psych package|last=Revelle|first=William|date=7 January 2017|url=http://personality-project.org/r/overview.pdf|access-date=23 April 2020|archive-date=27 August 2020|archive-url=https://web.archive.org/web/20200827020016/http://personality-project.org/r/overview.pdf|url-status=live}}</ref> calculates various reliability coefficients.
# EQS (paid):<ref>{{cite web|url=http://www.mvsoft.com/eqs60.htm|title=Multivariate Software, Inc.|website=www.mvsoft.com|url-status=dead|archive-url=https://web.archive.org/web/20010521070751/http://www.mvsoft.com/eqs60.htm|archive-date=2001-05-21}}</ref> This SEM software has a function to calculate reliability coefficients.
# RelCalc (free):<ref name = Cho/> Available with [[Microsoft Excel]]. <math>\rho_C</math> can be obtained without the need for SEM software. Various multidimensional SEM reliability coefficients and various types of <math>\omega_H</math> can be calculated based on the results of SEM software.