Descriptor
| Error of Measurement | 1 |
| Mathematical Formulas | 1 |
| Mathematical Models | 1 |
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| Test Reliability | 1 |
| Test Theory | 1 |
| Testing Problems | 1 |
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| Journal of Experimental… | 1 |
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| Zimmerman, Donald W. | 1 |
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Peer reviewedZimmerman, Donald W.; And Others – Journal of Experimental Education, 1981
Reliability coefficients of linear combinations of observed scores have anomalous properties which have led to difficulties in the investigation of difference scores and gain scores in test theory. Discrepancies between classical results and correct results obtained from more general formulas, which allow for correlated errors, are examined…
Descriptors: Error of Measurement, Mathematical Formulas, Mathematical Models, Scores
