PHP Classes

Cronbach Alpha: Calculate the Cronbach Alpha internal consistency

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Version License PHP version Categories  
cronbach-alpha 1.0GNU General Publi...5.0PHP 5, Statistics
Description Author  

This class can calculate the Cronbach Alpha internal consistency (reliability) measure.

It takes as parameter an array with sets of values that usually represent the answers given by respondents of a survey in the form of a scale.

This class processes the sets of values and computes the internal consistency using the Cronbach Alpha measure.

Innovation Award  
PHP Programming Innovation award nominee
September 2011
Number 9
Cronback Alpha is a measure that can be used to determine the level of consistency of sets of values, like for instance the responses that a group of users give to a survey.

This class provides a PHP implementation of the calculations necessary to compute the Cronbach Alpha factor.

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Plain text file class.cronbach.alpha.php Class class + example

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