Security Returns if State Occurs
State of Economy	Probability of State of Economy	Roll		Ross
Bust	0.50	14	%	18	%
Boom	0.50	25		6

Calculate the standard deviations for Roll and Ross by filling in the following table: (A negative value should be indicated by a minus sign. Do not round intermediate calculations. Round your answers to 4 decimal places.)

(Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places.)