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Yoes, Michael E.; Ho, Kevin T. – 1991
How two students with the same number-correct score, calculated by dramatically different patterns of responses, can achieve the same ability estimate is demonstrated. The present study investigated the incidence of person misfit to the model in a nationally standardized test of achievement devised using the Rasch item response theory model. It…
Descriptors: Achievement Tests, Comparative Testing, Elementary Secondary Education, Estimation (Mathematics)