A graphical display of the relationship between the probability of a correct response and the examinee's position on the underlying trait measured by the test is called
A) item-difficulty index
B) item-reliability index
C) item-characteristic curve
D) cumulative difficulty curve

Question

Quizplus · Accepted Answer

The item-characteristic curve (ICC) graphically represents the relationship between the probability of a correct response on a test item and the examinee's ability level or position on the trait that the test is measuring.

A Graphical Display of the Relationship Between the Probability of a Correct