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	-32%
Below average	0.1	-9
Average	0.3	15
Above average	0.4	39
Strong	0.1	67
1.0

1. Calculate the stock's expected return. Round your answer to two decimal places.%
2. Calculate the stock's standard deviation. Round your answer to two decimal places.%
3. Calculate the stock's coefficient of variation. Round your answer to two decimal places.