Problem: A stock's returns have the following distribution:
Demand for the Company's Products - Probability of this Demand Occurring - Rate of Return 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.