Question

If the standard deviation is 3, what is the population variance?

a.
2

b.
6

c.
9

d.
12

Answer 1

Answer: C) 9

Explanation:

Variance is the square root of the standard deviation.

Standard deviation is defined as the outcome of the average mean of the elements present in the group to determine its measurement.

Given that, standard deviation= 3

Variance = ?

Then, Variance =
`variance=standard\ deviation^2`

=3^2

=9

Therefore, Option (C) is correct.