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Reduce Randomly Guessing Effects In A University Generic Skills Test, Luc T. Le
Reduce Randomly Guessing Effects In A University Generic Skills Test, Luc T. Le
Dr Luc Tu Le
There frequent concern of guessing with multiple-choice questions (MCQ) in item response theory (IRT), particularly with the Rach model where a guessing parameter is not included. A practical solution is done post-hoc by removing responses to items too hard for a low ability examinee (see Andrich, et al., 2011; RUMM 2030, Andrich et al., 2012; Winsteps, Linacre, 2012). This study is used data from The Special Tertiary Admissions Test (STAT) to explore whether such responses from lower ability candidates to a hard item in a real test could be considered as randomly guessing and how Rasch item difficulty estimates improve …
Evaluate Item Dependency In An Aptitude Reasoning Test, Luc T. Le
Evaluate Item Dependency In An Aptitude Reasoning Test, Luc T. Le
Dr Luc Tu Le
The Special Tertiary Admissions Test (STAT), developed by the Australian Council for Educational Research (ACER), is as an alternate method of gaining entry into Australian university courses, for people who do not hold a recent Year 12 certificate in Australia. The test compromises 64 scored multiple-choice items, half of which are Verbal Reasoning questions and the other half, Quantitative Reasoning questions. Items were designed in testlets, where they could share the same stimulus (example, text paragraph). A natural question here was if the local independency assumption was violated in any sets of the items of the testlets. To investigate the …