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Seeking the real item difficulty: bias-corrected item difficulty and some consequences in Rasch and IRT modeling |
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| Authors: | Metsämuuronen Jari |
| Affiliation: | 1.Finnish Education Evaluation Centre, Hakaniemenranta 6, P.O. Box 380, 00531, Helsinki, Finland ;2.Centre for Learning Analytics, University of Turku, Turku, Finland ; |
| Abstract: | Behaviormetrika - When the response pattern in a test item deviates from the deterministic pattern, the percentage of correct answers (p) is shown to be a biased estimator for the latent item... |
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