Comparing Estimated and Real Item Difficulty Using Multi-Facet Rasch Analysis
Ayfer SAYIN,
Sebahat GÖREN
Abstract:This study aimed to compare estimated item difficulty based on expert opinion with real item difficulty based on data. For security reasons, some high-stakes tests are not pre-tested and item difficulty is estimated by teachers in classroom assessments, so it is necessary to examine the extent to which experts make accurate predictions. In this study, we developed a 12-item assessment test like the Turkish teacher certification exam. Item difficulty was estimated and compared separately based on 1165 student … Show more
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