**Quantitative Problem:** You are given the following probability distribution for CHC Enterprises:

State of Economy | Probability | Rate of return | |

Strong | 0.25 | 20 | % |

Normal | 0.50 | 10 | % |

Weak | 0.25 | -4 | % |

What is the stock's expected return? Do not round intermediate calculations. Round your answer to two decimal places.

%

What is the stock's standard deviation? Do not round intermediate calculations. Round your answer to two decimal places.

%

What is the stock's coefficient of variation? Do not round intermediate calculations. Round your answer to two decimal places.