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KR20: Stata module to calculate Kuder-Richardson coefficient of reliability


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  • Herve M. Caci


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    Computes the reliability coefficient of a set of dichotomous items, whereas Cronbach's alpha is used for multipoint scales. In addition, KR20 computes the item difficulty (proportion of 'right' answers), the average value of item difficulty, the item variance, the item-test point-biserial correlation coefficients, and the average value of item-test correlation coefficients. This is version 1.2 of the software.

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    Bibliographic Info

    Software component provided by Boston College Department of Economics in its series Statistical Software Components with number S351001.

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    Programming language: Stata
    Date of creation: 02 Aug 1998
    Date of revision: 14 Sep 1999
    Handle: RePEc:boc:bocode:s351001

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    Postal: Boston College, 140 Commonwealth Avenue, Chestnut Hill MA 02467 USA
    Phone: 617-552-3670
    Fax: +1-617-552-2308
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