You've observed the following returns on SkyNet Data Corporation's stock over the past five years: 15 percent,-6 percent, 18 percent, 14 percent, and 10 percent. a. What was the arithmetic average return on the company's stock over this five-year period? (Do not round intermediate calculations and enter your answer as a percent rounded to 1 decimal place, e.g., 32.1.) b-1. What was the variance of the company's returns over this period? (Do not round intermediate calculations and round your answer to 5 decimal places, e.g 16161.) b-2. What was the standard deviation of the company's returns over this period? (Do not round intermediate calculations and enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.) Answer is complete but not entirely correct. 10.2 % a. Average return b Variance 1. b tandard 2. deviation 72.16000 8.49 0 %