Security Returns If State Occurs
State of	Probability of
Economy	State of Economy	Roll		Ross
Bust	.20	-18	%	21	%
Boom	.80	18		6

Calculate the standard deviations for Roll and Ross by filling in the following table (verify your answer using returns expressed in percentages as well as decimals): (Negative amounts should be indicated by a minus sign. Round your Economy and Standard deviation answers to 2 decimal and other answers to 4 decimal places. Omit the "%" sign in your response.)

State of Economy	Probability of State of Economy	Return Deviation from Expected Return	Squared Return Deviation	Product
Roll
Bust
Boom
			2 =
Ross
Bust
Boom
			2 =

	Standard deviations
Roll	%
Ross	%