Please show the long hand way with the calculator, not excel

00 You've observed the following returns on Crash-n-Burn Computer's stock over the past five years: 3 percent. -8 percent, 28 percent, 17 percent, and 15 percent. What was the arithmetic average return on the company's stock over this five-year perlod? 00:06:43 11.00% 13.75% 13.09% 11.99% 8.91% What was the varlance of the company's returns over this perlod? 0.01915 0.02010 0.01532 0.01743 0.01551 What was the standard deviation of the company's returns over this period? 13.84% 14.18% 12.38% 16.47% 11.21%