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statistics yuc rcy rcyci item-fit principal_components_analysis items_estimated item_response_theory simulation_study person-fit varimax irtpro4 irt wingen ctt itemanalysis، psychometrics، itemstatistics، class course_teaching_plan stat211 statistical_analysis analysis spss education higher_education yic rcjyyanbu high rate of false positives mathematics bayseian meta analysis p-value threshold statistical significance bayes factor (bf) p-value parameters simulation estimated classical_test_theory