Here are the returns on two stocks. January February March April May June July August Digital Cheese Executive Fruit +15 -2 09747977 +8 +1 +16 Required: a-1. Calculate the variance and standard deviation of each stock. a-2. Which stock is riskler if held on its own? b. Now calculate the returns in each month of a portfolio that invests an equal amount each month in the two stocks. c. Is the variance more or less than halfway between the variance of the two individual stocks? Req A2 Calculate the variance and standard deviation of each stock. Note: Do not round intermediate calculations. Round your answers to 2 decimal places. Req A1 Variance Standard deviation Req B Digital Cheese Retum Reg C Executive Fruit Return % Req A1 Req A2 Req B Which stock is riskier if held on its own? Which stock is riskier if held on its own? Req C Req A1 Month Reg A2 January February March April May June July August Now calculate the returns in each month of a portfolio that invests an equal amount each month in the two stocks. Note: Negative amounts should be indicated by a minus sign. Do not round intermediate calculations. Round your answers to 2 decimal places. Req B Portfolio Return Reg C Req A1 Reg A2 Req B Req C Is the variance more or less than halfway between the variance of the two individual stocks? Is the variance more or less than halfway between the variance of the two individual stocks? Less