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Problem 12-9 Calculating Returns and Variability (LO1) You've observed the following returns on Regina Computer's stock over the past five years: 18%, -3%, 16%,

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Problem 12-9 Calculating Returns and Variability (LO1) You've observed the following returns on Regina Computer's stock over the past five years: 18%, -3%, 16%, 11%, and 10%. a. What was the arithmetic average return on Regina's stock over this five-year period? (Round the final answer to 1 decimal place.) Average return 10.4 % b-1. What was the variance of Regina's returns over this period? (Do not round intermediate calculations. Round the final answer to 5 decimal places.) Variance b-2. What was the standard deviation of Regina's returns over this period? (Do not round intermediate calculations. Round the final answer to 1 decimal place.) Standard deviation 1%

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