Here are the returns on two stocks. January February March April May June July August Digital Cheese +18 -4 +6 +8 -5 +4 -3 -9 Executive Fruit +8 +1 +5 +16 +2 +6 -4 -3 a-1. Calculate the variance and standard deviation of each stock. (Do not round intermediate calculations. Round your answers to 2 decimal places.) Answer is complete but not entirely correct. Digital Cheese Executive Fruit Retum Return Variance 77.55 % 41.55 % Standard deviation 8.81 X 6.45 X