DEVELOPMENT AND CALIBRATION OF A BASIC SCIENCE ACHIEVEMENT TEST USING THE TWO-PARAMETER LOGISTIC MODEL OF ITEM RESPONSE THEORY (IRT)
Abstract Assessment is a critical component of the educational process. Tests are used as instruments for assessment. The purpose of this study was to develop and calibrate a basic science achievement test using the two-parameter IRT model. Eight research questions and three hypotheses were formulated to guide the study. These include, what are the estimates of item difficulty parameter of the BSAT and what are the ability estimates of the ...
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