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Thayer, Dorothy T. – Psychometrika, 1983
Estimation techniques for generating the covariance matrix for two new tests and an existing test without the necessity of any examinee having to take two complete tests is presented. An application of these techniques to linear, observed-score, test equating is presented. (Author/JKS)
Descriptors: Correlation, Equated Scores, Estimation (Mathematics), Matrices