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Permutation Test for the Equality of Several Independent Cronbach’s Alpha Coefficients
Journal of The Korea Society of Computer and Information
Abbr :
JKSCI
2019, 24(6), pp.159-164
DOI :https://doi.org/10.9708/jksci.2019.24.06.159
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science
2019, 24(6), pp.159-164
DOI :https://doi.org/10.9708/jksci.2019.24.06.159
Publisher : The Korean Society Of Computer And Information
Research Area : Computer Science
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The statistical inference of Cronbach’s alpha measure of internal reliability is known to be inaccurate when sample size is small and the assumption of normality is violated. In this paper, we describe the permutation method in which we compute resampling p-values for testing the difference between two or more independent Cronbach’s alpha coefficients. When the over-all permutation test is significant, we also make pairwise post-hoc comparisons using permutaion method. The permutation tests for the equality of two independent Cronbach’s alpha coefficients and three independent Cronbach’s alpha coefficients are illustrated with an example analysis of survey data.
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