Jamie's IQ falls one and a half standard deviations below the mean for children his age. Given this information, Jamie's deviation IQ score is:
A) 68.
B) 76.
C) 84.
D) 92.
E) 124.

Question

Quizplus · Accepted Answer

Jamie's IQ falls one and a half standard deviations below the mean, which is 100. So, Jamie's IQ is 100 - (1.5 * 15) = 75. The deviation IQ score is (75 - 100) / 15 = -1.67, which corresponds to an IQ score of 76.

Jamie's IQ Falls One and a Half Standard Deviations Below