A stock has yielded retur

A stock has yielded retur

A stock has yielded returns of 6 percent, 11 percent, 14 percent, and -2 percent over the past 4 years, respectively. What is the standard deviation of these returns?a. 6.47 percent b. 5.86 percent c. 6.99 percent d. 6.05 percent e. 5.52 percent

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