QUESTION 4 of 10: Stock returns vary from year to year. The more variance a stock displays the greater the potential risk. These are the

rates of return for a stock over the last five years. Calculate the variance of these investment returns: 10, 30, 15, 5, 20. Hint: The

variance

of

a series of numbers is the sum of the squares of their differences from the mean (average) of the numbers divided by the number of items

in the series.

O O

A21
B53
C74
D95