Approximately what percentage of IQ scores falls between 70 and 130?
A) 50 percent
B) 65 percent
C) 95 percent
D) 99 percent

Question

Quizplus · Accepted Answer

IQ scores are standardized so that the average score is 100 and the standard deviation is 15. Therefore, 68% of scores fall within one standard deviation above or below the mean (85-115), and 95% fall within two standard deviations above or below the mean (70-130).

Approximately What Percentage of IQ Scores Falls Between 70 and 130