Digital Cheese +16 Executive Fruit February March +14 une July August -8 a-1. Calculate the varlance and standard deMation of each stock. (Do not round Intermediate calculations. Round your answers to 2 decimal places.) Digital Cheese Executive Fruit Retum Standard deviation a-2 Which stock Is the riskler If held on its own? Digltal Cheese O Executive Fruit b. Now calculate the returns In each month of a portfolio that Invests an equal amount each month In the two stocks. (Negative amounts should be Indicated by a minus sign. Do not round Intermediate calculations. Round your answers to 2 decimal places.) Month Return March April May