Here are the returns on two stocks. Digital Executive Cheese Fruit January February March +19 +8 3 +5 +4 April +17 +7 May June July August -4 +2 +3 -2 3 8 2 a-1. Calculate the variance and standard deviation of each stock. (Do not round intermediate cal decimal places.) Digital Cheese Retum Executive Fruit Return Variance % Standard deviation N432