Managing Portfolio

Topic - Variance and Standard Deviation for individual investment (single asset)

There are 2 assets and 3 states of the economy

State Of Economy	Probability of State of Economy	Expected return on Stock A if state occurs	Expected return on Stock B if state occurs
Recession	0.1	-0.20	0.30
Normal	0.6	0.10	0.20
Boom	0.3	0.70	0.50

What are the expected returns and standard deviations for these 2 stocks?