Which of the following is true of the characteristic curve for a "good" test item?
A)It is normally distributed.
B)It is bimodal and positively skewed.
C)It has a gradual, positive slope.
D)It is negatively accelerated.

Question

Quizplus · Accepted Answer

The characteristic curve for a "good" test item should have a gradual, positive slope, indicating that as the ability of the examinee increases, the probability of getting the item correct also increases. This reflects a test item's ability to discriminate between different levels of ability among test takers.

Which of the Following Is True of the Characteristic Curve