Consider the following table: Requirect: a. Calculate the values of mean return and variance for the stock fund. (Do not round intermediate calculations. Round "Menn return" value to 1 decimal ploce and "Variance" to 2 decimal ploces.) b. Calculate the value of the covariance between the stock and bond funds. (Negative value should be indicated by n minus sign, Do not round intermediate caleulations. Round your answer to 2 decimol ploces.)