To compute the variance, what should one do? Divide the standard deviation by n minus - 1. B. Double the standard deviation. C. Take the square root of the standard deviation. D. Square the standard deviation.

Question

Mathematics

Jamarion Horton

29 April, 20:33

To compute the variance, what should one do? Divide the standard deviation by n minus - 1. B. Double the standard deviation. C. Take the square root of the standard deviation. D. Square the standard deviation.

+3

Answers (2)

Know the Answer?

Chaim Mann · Answer 1

D. Square the standard deviation.

Step-by-step explanation:

Variance is the expectation of the squared deviation of a random variable from its mean.

Standard deviation is the square root of the variance. Therefore, variance is the square of standard deviation.

Cameron Miller · Answer 2

D. Square the standard deviation.

Step-by-step explanation:

To compute the Variance of any given set of data given the standard deviation, all we simply do is take the square of the standard deviation.

If for example, the standard deviation of a given set of data is 6, the variance will be 6²=36.

Similarly, standard deviation can be obtained from the variance by simply taking the square root of the variance. e. g. If the Variance of a group of data is 9, the standard deviation is √9 = 3.