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An Examination of the Assumption that the Equating of Parallel Forms is Population-Independent.
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Angoff, William H.; Cowell, William R. – Journal of Educational Measurement, 1986
Linear conversions were developed relating scores on recent forms of the Graduate Record Examinations. Conversions based on specially selected subpopulations were compared with total-group conversions and evaluated. Conclusions indicated that the data clearly support the assumption of population independence for homogenoeous tests, but not quite…
Descriptors: College Entrance Examinations, Equated Scores, Groups, Higher Education
An Examination of the Assumption that the Equating of Parallel Forms is Population-Independent.
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Angoff, William H.; Cowell, William R. – 1985
Linear and equipercentile equating conversions were developed for two forms of the Graduate Record Examinations (GRE) quantitative test and the verbal-plus-quantitative test. From a very large sample of students taking the GRE in October 1981, subpopulations were selected with respect to race, sex, field of study, and level of performance (defined…
Descriptors: Aptitude Tests, College Entrance Examinations, Equated Scores, Error of Measurement