Here are the percentage returns on two stocks.

Month	Digital Cheese				Executive Fruit
January		15	%			9	%
February		5				1
March		6				4
April		7				15
May		6				2
June		4				4
July		5				5
August		8				4

a-1. Calculate the monthly variance and standard deviation of each stock. (Do not round intermediate calculations. Round your answers to 1 decimal places.)

	Digital Cheese	Executive Fruit
Variance
Standard deviation %

b. Now calculate the variance and standard deviation of the returns on a portfolio that invests an equal amount each month in the two stocks. (Do not round intermediate calculations. Round your answers to 1 decimal places.)

Variance___________

Standard deviation %_________