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| Journal of Educational… | 1 |
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| Oosterhof, Albert C. | 1 |
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Peer reviewedOosterhof, Albert C. – Journal of Educational Measurement, 1976
The purpose of this study was to investigate the degree to which various selected test item discrimination indices reflect a common factor. The indices used include the point-biserial, biserial, phi and tetrachoric coefficients, Flanagan's approximation of the product-moment correlation, Gulliksen's item reliability index, and Findley's difference…
Descriptors: Comparative Analysis, Correlation, Factor Analysis, Mathematical Formulas
