Question

standard deviation formula​

Answer 1

\sigma = population standard deviation

N = the size of the population

x_i = each value from the population

\mu = the population mean

Answer 2

Step-by-step explanation:

population standard deviation

N = the size of the population

x_i = each value from the population

\mu = the population mean

To find the standard deviation, we take the square root of the variance. From learning that SD = 13.31, we can say that each score deviates from the mean by 13.31 points on average.