Youve observed the following returns on Cedar Computerss stock over the past five years: 8...

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Finance

Youve observed the following returns on Cedar Computerss stock over the past five years: 8 percent, 12 percent, 14 percent, 21 percent, and 16 percent

a.

What was the arithmetic average return on the companys stock over this 5-year period?

For this answer I got 9.4%

b-1. What was the variance of the company's returns over this period?
b-2. What was the standard deviation of the companys returns over this period?

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