Youve observed the following returns on Doyscher Corporations stock over the past five years: 28.2 percent, 15.8 percent, 34.6 percent, 3.4 percent, and 22.4 percent.

Requirement 1:

What was the arithmetic average return on the stock over this five-year period?

Requirement 2:

(a)

What was the variance of the returns over this period?

(b)	What was the standard deviation of the returns over this period?