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Baglin, Roger F. – Journal of Educational Measurement, 1986
Norm-referenced standardized achievement tests are designed for obtaining group scores which can vary widely, depending on not only the measure of central tendency but also the type of derived score employed. This situation is hypothesized to be the result of using inappropriate statistical procedures to develop publishers' scaled scores.…
Descriptors: Achievement Tests, Elementary Secondary Education, Latent Trait Theory, Norm Referenced Tests