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Peer reviewedQuereshi, M. Y. – Journal of Educational Measurement, 1971
The study investigated the degree to which errors of scaling and selection depress the linear relationship and whether the reduction in the magnitude of r differs with the type of error. Results indicated that various scaling errors caused considerable discrepancy in the measurement of underlying relations, but the effect of non-normality was…
Descriptors: Correlation, Error Patterns, Factor Analysis, Scaling
Peer reviewedHarnisch, Delwyn L.; Linn, Robert L. – Journal of Educational Measurement, 1981
Different indices can be used to measure an individual's pattern of responses on an achievement test as usual or consistent with the norm. The relationships among eight of these indices are investigated for a math and reading test given to approximately 2,100 fourth-grade students. (Author/BW)
Descriptors: Comparative Analysis, Correlation, Error Patterns, Grade 4
