If the majority of people score within one standard deviation of the mean on an IQ test,the scores may range from:
A) 75 to 105
B) 89 to 109
C) 85 to 115
D) 80 to 120

Question

Quizplus · Accepted Answer

The range of scores within one standard deviation of the mean is typically between 85 and 115 on most IQ tests. This is because the mean score on most IQ tests is set to 100 and one standard deviation is usually around 15 points. Therefore, choice C is the best answer because it falls within this typical range. Choices A, B, and D do not have scores that fall within this range.

If the Majority of People Score Within One Standard Deviation