What is the variance of these four scores: 2, 3, 5, 6?

A. 10

B. 4

C. 1.58

D. 2.5

Assume you are trying to decide where to live based on how much it would cost to rent an apartment. Which of the following pieces of information about the renting would help give you the most accurate picture of the cost of renting an apartment in that area?

A. mean, median

B. mean, standard deviation

C. mean, positively skewed distribution

D. mean, mode

If the variance of a set of scores is 9, then what is the standard deviation?

A. 18

B. 6

C. 81

D. 3