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Cronbach's Alpha

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Cronbach's Alpha

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10 Jun 2005 (Updated )

Cronbach's alpha calculation.

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Description

This function calculates the Cronbach's alpha by quantitative answers of a questionnaire. The questionnaire's answers have to be a 2-dimensional matrix, which is the only function's input. If the result is greater than 0.8 then the answers are considered reliable. If the score is below 0.2 then the answers are not reliable at all. Note that a negative score (which may occur for statistical reasons) indicates that the answers are completely random.

Example:
X=randn(20,7);
a=cronbach(X);

MATLAB release MATLAB 7.0.1 (R14SP1)
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Comments and Ratings (3)
28 Dec 2015 Mohammed Almutawa  
05 Sep 2008 harry entebang  
10 Apr 2006 Othmar Schälli  

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