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• W4386388541 abstract "This study aimed to investigate the parameters estimation of item response theory (IRT) and their reliability in the context of binary data across multiple groups derived from the same population. Within the scope of the research, 2017 (April) mathematics subtest of the Transition from Primary to Secondary Education exam (TPSEE) was used. The dataset encompassed 7500 students as a single-sample subgroup and 3750 students distributed across two subgroups. In the research, IRT assumptions were examined first. After meeting the assumptions, item and ability estimations were performed with 1PLM, 2PLM, 3PLM, and 4PLM for dichotomous data. When the model data fits were examined, it was found that the best fit was obtained with 3PLM in all conditions. It was observed that the item parameters did not differ significantly as the sample changed. The a and b parameters differ according to the different IRT models. While there is a partial difference between the ability parameters as the samples change, there are also differences as the models change. Minor differences have been observed among the ability parameters obtained through ability estimation methods (Expected A Posteriori (EAP) and Maximum A Posteriori (MAP)). The marginal reliability coefficients were similar in all conditions. It is recommended that researchers perform parameter estimation with which have the best model data fit out of 3PLM or 4PLM to provide more information while performing analysis in IRT." @default.
• W4386388541 created "2023-09-03" @default.
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• W4386388541 date "2023-09-02" @default.
• W4386388541 modified "2023-10-16" @default.
• W4386388541 title "An Investigation of Item Response Theory Parameter Estimations and Reliability in Multiple Groups" @default.
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• W4386388541 doi "https://doi.org/10.17152/gefad.1202751" @default.
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