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Engineering, 16.04.2020 00:56 EmmaPreston43

Which of the following statements concerning the standard deviation are correct? (a) The standard deviation measures the volatility of a security’s returns. (b) The standard deviation can be negative, positive, or equal to zero. (c) The 95 percent probability range is equal to the mean plus or minus two standard deviations. (d) The lower the standard deviation, the lower the level of risk.

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