A stock had returns of 11 percent, -18 percent, -21 percent, 20 percent, and 34 percent over the past five years. What i...
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A stock had returns of 11 percent, -18 percent, -21 percent, 20 percent, and 34 percent over the past five years. What is the standard deviation of these returns?
Can someone show me step by step how to do this? How do you get the variance and the sd?