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| Applied Measurement in… | 1 |
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| Feldt, Leonard S. | 1 |
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Peer reviewedFeldt, Leonard S. – Applied Measurement in Education, 2002
Considers the degree of bias in testlet-based alpha (internal consistency reliability) through hypothetical examples and real test data from four tests of the Iowa Tests of Basic Skills. Presents a simple formula for computing a testlet-based congeneric coefficient. (SLD)
Descriptors: Estimation (Mathematics), Reliability, Statistical Bias, Test Format
