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Here are the percentage returns on two stocks. Here are the percentage returns on two stocks. a-1. Calculate the monthly variance and standard deviation of each stock. (Do not round intermediate calculations. Round your answers to 1 decimal places.) a-2. Which stock is the riskier if held on its own? Digital Cheese Executive Fruit b. Now calculate the variance and standard deviation of the returns on a portfollo that invests an equal amount each month in the two stocks. (Do not round intermediate calculations. Round your answers to 1 decimal places.) c. Is the varionce more or less than haif way between the variance of the two individual stocks? more than the 50%50% less than the sok-50\%