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Use the following returns for X and Y. Returns 10 Year points 22.2% - 17.2 10.2 20.4 27.6% - 4.2 29.6 - 15.4 33.6 5.2 a. Calculate the average returns for X and Y. (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) b. Calculate the variances for X and Y. (Do not round intermediate calculations and round your answers to 6 decimal places, e.g., 32.161616.) Calculate the standard deviations for X and Y. (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) Answer is complete but not entirely correct. % % Average return Variance Standard deviation 8.16 200.600000 14.16 14.24 401.560000 20.04 X