A stock’s return has the following distributions:
Demand for the Probability of This Rate of Return
Company’s Products Demand Occurring 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
1.0
Calculate the stock’s expected return, standard deviation, and coefficient of variation.