The following table shows the different states that may prevail in an economy next year, and their respective probabilities and the returns related to each state for a company.

Scenario	Probability	HPR(%)
Severe recession	0.07	-15
Mild recession	0.21	-5
Normal growth	0.50	8
Boom	0.22	16

Using the information in the above table answer the following questions:

Calculate the expected return

Calculate the standard deviation