The standard deviation is equal to the square root of
A)the sum of squared deviations from the mean.
B)the variance.
C)N -1.
D)the standard error of the mean.

Question

Quizplus · Accepted Answer

The formula for standard deviation is the square root of the variance, which is calculated by taking the sum of squared deviations from the mean divided by the sample size minus 1 (N-1). So, statement A is a part of this calculation, but not the full formula. Statement C is the formula for calculating the sample variance, but not the standard deviation. Statement D is a separate concept and not related to the calculation of standard deviation. Therefore, the correct choice is B.

The Standard Deviation Is Equal to the Square Root of