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A stock's return has the following distribution:

A stock's return has the following distribution:
Demand for the               Probability of This             Rate of Return
Company's Products        Demand Occuring             if This Demand Occurs
Weak                               0.1                                    (50%)
Below Average                 0.2                                      (5%)
Average                          0.4                                       16%
Above average                0.2                                        25%
Strong                            0.1                                        60%
If the stock's expected return = 11.4%, calculate standard deviation and coefficient of variation.

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