Average intelligence is usually defined as any score from
A)90 to 109.
B)120 to 129.
C)70 to 89.
D)110 to 119.

Question

Quizplus · Accepted Answer

The average intelligence quotient (IQ) is usually defined as any score between 90 and 109. This is based on the standard deviation of IQ scores, which is set at 15 points. Therefore, scores falling within one standard deviation of the mean IQ score (100) would be considered average.

Average Intelligence Is Usually Defined as Any Score from