The rate of return on ABC, Inc., stock over the last five years was 2.65 percent, 7.72 percent, 5.31 percent, 5.14 perce

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The rate of return on ABC, Inc., stock over the last five years
was 2.65 percent, 7.72 percent, 5.31 percent, 5.14 percent, and
-1.2 percent. What was the standard deviation of returns (in
percent) on ABC stock over this period? Do
intermediate work to six decimals. Answer to two
decimals.