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Total Score is defined with the number of those correctly-responded (dichotomous) items; Sub-score is defined as the total score associated with the sub-scale; Overall Score is defined as the...
11 July 2019 3,748 2 View
This is the third section of Items Decomposition: How to structure the Scores and Items. This section describes, using the graphical representation, how the score associated with all items in a...
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In practice, IRT (2PL/3PL) and Total Score may not be consistent. In case that, for two examinees, say S1 and S2, there are IRT ability (S1) > IRT ability (S2) Total...
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