Suppose we have the following discrete probability distribution of returns on three different assets: government bonds, ordinary shares of company A, and ordinary shares of company B.

		% Returns for a period (e.g year)
Economic Condition	Probability	Bonds	Company A shares	Company B shares
Very poor Poor Average Good	0.1 0.2 0.4 0.3 1.0	9 8 6 4	-2 3 8 11	-3 2 9 13

1) Calculate the expected returns for these assets. (6.1%, 6.9%, 7.6%)

2) Calculate the standard deviations for these assets. (Approximately 1.7%, 4.06%, 5.2%)

3) Calculate the coefficients of variation for these asset. (0.279, 0.588, 0.684)