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On most modern IQ tests, a score of 115 would be:

A. About normal
B. About 15% higher than the average of one’s age agemates
C. An indication of genius
D. One standard deviation above the mean
Correct Answer: D. One standard deviation above the mean

On most modern IQ tests, the mean score is 100 with a standard deviation of 15. Therefore, a score of 115 is precisely one standard deviation above the mean. Options A, B, and C misinterpret this specific statistical placement.

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