Consider the following table:a. Calculate the values of mean return and variance for the stock fund. (Do not round intermediate calculations. Round ''Mean return'' value to 1 decimal place and ''Variance'' to 4 decimal places.) Mean return Varianceb. Calculate the value of the covariance between the stock and bond funds. (Negative value should be indicated by a minus sign. Do not round intermediate calculations. Round your answer to 4 decimal places.) Covariance