Expected Return: Discrete Distribution

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		0.1		-50%
Below average		0.2		-9
Average		0.4		12
Above average		0.2		40
Strong		0.1		60
		1.0

Calculate the stock's expected return. Round your answer to two decimal places. ?%

Calculate the standard deviation. Round your answer to two decimal places. ? %