Standard deviation is best described as A. the difference between the number and the mean.
B. the sum of the differences between the numbers and the mean.
C. the square root of the sum of the differences between the numbers and the mean squared and divided by the number of terms.
D. the square root of the mean divided by the Z-Score times the sum of the numbers.

Step-by-step explanation:

Standard deviation is best described as

A. the difference between the number and the mean.

B.the sum of the differences between the numbers and the mean.

C. the square root of the sum of the differences between the numbers and the mean squared and divided by the number of terms.

D.the square root of the mean divided by the Z-Score times the sum of the numbers.

{3 + i, 3 - i, 3, -1}

step-by-step explanation:

the answer is -6

step-by-step explanation:

the answer is -6 because its next to the variable m