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Item Difficulty Perhaps “item difficulty” should have been named “item easiness;” it expresses the proportion or percentage of students who answered the item correctly. Item difficulty can range from 0.0 (none of
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Document Date: 2013-01-25 09:19:22
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Item Difficulty Perhaps “item difficulty” should have been named “item easiness;” it expresses the proportion or percentage of students who answered the item correctly. Item difficulty can range from 0.0 (none of