Addition to correlations

I really like the correlation module of statistiXl. It offers a great many useful procedures. Thanks!

Many psychologists - perhaps other disciplines that deal with measurement? - use correlation to study the reliability of their measures. It is fairly easy to carry out item analysis in Excel, but not so easy to calculate Cronbach's alpha - the Rolls Royce measure of reliability. Since alpha is a kind of correlation coefficient it would be a worthwhile addition to the multiple correlation section of the correlation procedures - at least for me!

Thanks for this forum!

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