Year Large-Company Stocks 7.37% 15.09 2 8.03 26.59 37.31 24.01 5.95 5.47 5.49 7.76 4 6.65 Calculate the arithmetic average returns for large-company stocks and T-bills over this time period (Do not round intermediate calculations and enter your answers as a percent rounded to 2 decimal places, e.g., 32.16.) Arithmetic average returns Large-company stock Calculate the standard deviation of the returns for large-company stocks and T-bills over this time period. (Do not round intermediate calculations and enter your answers as a percen decimal places, e.g., 32.16.)