What is item analysis in testing?
Item analysis examines questions using response patterns such as difficulty and discrimination.
Key concepts and practice
The correct response rate indicates difficulty; differences between stronger and struggling learners suggest discrimination. Choice of distractors may reveal ambiguous wording or misconceptions. Statistics fluctuate in small groups.
Examples, evaluation and limits
Numbers guide review of wording and learning goals but do not alone dictate deletion. An easy item may appropriately assess an essential skill. Errors can signal instructional gaps as well as item flaws.
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