Question

Current intelligence tests, including the Stanford-Binet, assign an average performance score as 100. In a normally distributed set of scores, with a standard deviation of 15, which percentage of scores will fall between 85 and 115

Answer 1

68.27%

Explanation:

By the Empirical Rule, the amount of data that is 1σ below and above the mean μ accounts for 68.27% of the data.