You’ve observed the following returns on Doyscher Corporation’s 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? (Do not round intermediate calculations. Enter your answer as a percentage rounded to 2 decimal places (e.g., 32.16).)

Arithmetic average return           %

Requirement 2:

(a) What was the variance of the returns over this period? (Do not round intermediate calculations. Round your answer to 6 decimal places (e.g., 32.161616).)

  Variance              

(b) What was the standard deviation of the returns over this period? (Do not round intermediate calculations. Enter your answer as a percentage rounded to 2 decimal places (e.g., 32.16).)

  Standard deviation        %