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

First Page		Document Content
Date: 2013-01-25 09:19:22		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 Add to Reading List Source URL: www.omet.pitt.edu Download Document from Source Website File Size: 180,42 KB Share Document on Facebook