Question

Variance is_________.

a. ​a measure of the average, or central value of a random variable
b. ​a measure of the dispersion of a random variable
c. ​the square root of the standard deviation
d. ​the sum of the deviation of data elements from the mean

Answer 1

B

Explanation:

Variance can be said to be a measure of dispersion for a random sample.

Variance = pq/n

When given the variance, we can find the standard deviation.

Standard deviation = √variance

= √pq/n