Practice Quiz

National Counselor Exam Prep (NCE)

Category - Research and Program Evaluation

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What does an ‘item characteristic’ curve plot?
  1. The responses to each of the options to an item
  2. The item’s difficulty against its discrimination
  3. The probability of answering an item correctly against estimates of ability
  4. An individual’s responses against the entire group’s responses
Explanation
Answer: C - An item characteristic curve plots the probability of answering an item correctly against estimates of ability
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