The extreme group method and the point biserial method are both used to estimate
A)reliability.
B)validity.
C)discriminability.
D)difficulty.

Question

Quizplus · Accepted Answer

Both the extreme group method and the point biserial method are statistical techniques used to estimate the discriminability of test items, which refers to the ability of an item to distinguish between high and low performers.

The Extreme Group Method and the Point Biserial Method Are