20.00 points Problem 12-7 Calculating Returns and Variability LO1 13% 23 % 16 28 12 15 4 11 12 18 10 Using the returns shown above, calculate the arithmetic average retums, the variances, and the standard deviations for X and Y. (Do not round intermediate calculations. Enter your average return and standard deviation as a percent rounded to 2 decimal places, e.g, 32.16, and round the variance to 5 decimal places, e.g 32.16161.) Average return Standard deviation References eBook & Resources Worksheet Difficulity: Basic Section: 12.2 The Historical Record Learning Objective: 12-01 How to Problem 12-7 Calculating Returns and Variability [LO1] calculate the return on an investment