Coefficient alpha and the internal structure of tests.
Abstract
A general formula (α) of which a special case is the Kuder-Richardson coefficient of equivalence is shown to be the mean of all split-half coefficients resulting from different splittings of a test. α is therefore an estimate of the correlation between two random samples of items from a universe of items like those in the test. α is found to be an appropriate index of equivalence and, except for very short tests, of the first-factor...
Paper Details
Title
Coefficient alpha and the internal structure of tests.
Published Date
Sep 1, 1951
Journal
Volume
16
Issue
3
Pages
297 - 334
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