In a normal distribution of IQ scores,what percentage of people have a score between 85 and 115?
A) 54%
B) 68.26%
C) 95.44%
D) 99.9%

Question

Quizplus · Accepted Answer

According to the empirical rule, 68% of the data falls within one standard deviation of the mean in a normal distribution. Since the mean IQ score is typically set at 100 with a standard deviation of 15, one standard deviation below and above the mean would be 85 and 115, respectively. Therefore, 68.26% of people have a score between 85 and 115.

In a Normal Distribution of IQ Scores,what Percentage of People