You've observed the following returns on Pine Computer's stock over the past five years: -24.3 percent,...

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You've observed the following returns on Pine Computer's stock over the past five years: -24.3 percent, 13.2 percent, 29.4 percent, 2.1 percent, and 21.1 percent. a. What was the arithmetic average return on the stock over this five-year period? Note: Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16. b. What was the variance of the returns over this period? Note: Do not round intermediate calculations and round your answer to 6 decimal places, e.g., .161616. c. What was the standard deviation of the returns over this period? Note: Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16. a. Arithmetic average return b. Variance c. Standard deviation % % You've observed the following returns on Pine Computer's stock over the past five years: -24.3 percent, 13.2 percent, 29.4 percent, 2.1 percent, and 21.1 percent. a. What was the arithmetic average return on the stock over this five-year period? Note: Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16. b. What was the variance of the returns over this period? Note: Do not round intermediate calculations and round your answer to 6 decimal places, e.g., .161616. c. What was the standard deviation of the returns over this period? Note: Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16. a. Arithmetic average return b. Variance c. Standard deviation % %