A stock's return has the following distribution:
Demand for the Company's Products Probability of This Demand Occurring Rate of Return if This Demand Occurs
Weak 0.05 (40%)
Below average 0.25 (4%)
Average 0.40 20%
Above average 0.25 35%
Strong 0.05 55%
1.00
What is the stock's expected return?
What is the stock's standard deviation?
What is the stock's coefficient of variation?