In the normal distribution of IQ scores, approximately what percentage of scores falls between 85 and 115?
A)95%
B)2%
C)34%
D)68%
E)14%

Question

Quizplus · Accepted Answer

In a normal distribution, approximately 68% of the data falls within one standard deviation of the mean. Since IQ scores are normally distributed with a mean of 100 and a standard deviation of 15, scores between 85 and 115 fall within one standard deviation of the mean, encompassing about 68% of the population.

In the Normal Distribution of IQ Scores, Approximately What Percentage