How wide is the interval encompassed by a stanine?
A) 10 points
B) It depends on the particular test that was administered
C) 1/4 standard error unit
D) 1/2 standard deviation unit

Question

Quizplus · Accepted Answer

A stanine (short for "standard nine") is a method of score scaling that ranges from 1 to 9, with 5 being the midpoint. The width of the interval encompassed by a stanine is equal to 1/2 of a standard deviation unit, which varies depending on the particular test that was administered. Therefore, option D is the best choice.

How Wide Is the Interval Encompassed by a Stanine