You've observed the following returns on Yasmin 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. Enter your answer as a percent rounded to 1 decimal place, e.g., 32.1.)

Average return is what__________%

b-1What was the variance of the company's stock returns over this period?(Do not round intermediate calculations and round your answer to 5 decimal places, e.g., 32.16161.)

Varianceis what __________?

b-2What was the standard deviation of the company's stock returns over this period?(Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places, e.g., 32.16.)

Standard deviationis what _________%