The coefficient of variation is a better measure of stand-alone risk than standard deviation because it is a standardized measure of risk per unit; it is calculated as the -Select- divided by the expected return. The coefficient of variation shows the risk per unit of return, so it provides a more meaningful risk measure when the expected returns on two alternatives are not -Select- The Sharpe ratio compares the asset's realized excess return to its -Select- over a specified period. Excess returns measure the amount that investment returns are above the risk-free rate so investments with returns equal to the risk-free rate will have a -Select- Sharpe ratio. It follows that over a given time period, investments with -Select- Sharpe ratios performed better, because they generated -Select- excess returns per unit of risk. The Sharpe ratio is calculated as: Sharpe ratio (Return - Risk-free rate)/ Quantitative Problem: You are given the following probability distribution for CHC Enterprises: State of Economy Probability Rate of return Strong Normal Weak 0.15 22% 0.55 0.30 9% -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.