Check my work Problem 11-19 Diversification (LO3) Here are the returns on two stocks Fruit Jauary +19 February kpril Tune +13 +2 aly uqust a-1. Calculate the variance and standard deviation of each stock. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Dytal Cheese Executive Fr 0 command option Check my work a-2. Which stock is the riskier if held on its own? Digital Cheese OExecutive 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.)