The distribution of IQ in the population is normal, with 68% of scores clustering between 85 and 115, with a mean of 100. An additional 28% of scores fall between 115 and 130 at the upper end and between 70 and 85 at the lower end

Question

Quizplus · Accepted Answer

This statement describes the standard deviation of the distribution of IQ scores, where 68% of scores fall within one standard deviation of the mean (which is 100). The remaining 32% of scores fall outside of this range, with 28% above and 4% below. The given ranges for the upper and lower ends of the distribution are accurate within this context.

The Distribution of IQ in the Population Is Normal, with 68