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You ve observed the following returns on Pine Computer s stock over the past five years: 1 1 percent, 1 0 percent, 1 9 percent,

Youve observed the following returns on Pine Computers stock over the past five years: 11 percent, 10 percent, 19 percent, 18 percent, and 10 percent.
a.
What was the arithmetic average return on the companys 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 companys 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 companys 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.)

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