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Direct linkLee, Guemin; Fitzpatrick, Anne R. – Asia Pacific Education Review, 2008
Because parameter estimates from different calibration runs under the IRT model are linearly related, a linear equation can convert IRT parameter estimates onto another scale metric without changing the probability of a correct response (Kolen & Brennan, 1995, 2004). This study was designed to explore a new approach to finding a linear…
Descriptors: Equated Scores, Item Response Theory, Models, Equations (Mathematics)
