Cronbach's Alpha

Version 1.0.0.0 (1.6 KB) by Alex Schlegel
Compute standardized and unstandardized Cronbach's alphas
5.0
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768 Downloads
Updated 24 Sep 2012

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Computes standardized and unstandardized Cronbach's alphas for an nR x nI array of nR repetitions of observations of nI items. Cronbach's alpha measures the reliability of psychometric test scores.

A couple other versions of functions for calculating Cronbach's alpha exist on the exchange but are not well documented. Leontitsis' calculates only unstandardized alphas and Nagel's calculates standardized scores but uses Spearman correlation instead of Pearson.

This function calculates both and uses Pearson correlations.

Cite As

Alex Schlegel (2025). Cronbach's Alpha (https://www.mathworks.com/matlabcentral/fileexchange/38320-cronbach-s-alpha), MATLAB Central File Exchange. Retrieved .

MATLAB Release Compatibility
Created with R2010a
Compatible with any release
Platform Compatibility
Windows macOS Linux
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Version Published Release Notes
1.0.0.0