Suppose we have the following returns for large-company stocks and Treasury bills over a six year period:
Year Large Company US Treasury Bill
1 3.98 4.56
2 14.33 4.92
3 19.17 3.84
4 –14.51 6.98
5 –32.00 5.22
6 37.41 5.36
a. Calculate the arithmetic average returns for large-company stocks and T-bills over this period. (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places (e.g., 32.16).)
Average returns:
Large company stocks __%
T-bills __%
b. Calculate the standard deviation of the returns for large-company stocks and T-bills over this period. (Do not round intermediate calculations. Enter your answers as a percent rounded to 2 decimal places (e.g., 32.16).)
Standard deviation:
Large company stocks __%
T-bills __%
c-1 Calculate the observed risk premium in each year for the large-company stocks versus the T-bills. What was the arithmetic average risk premium over this period? (Negative amount should be indicated by a minus sign. Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places (e.g., 32.16).)
Average risk premium __%
c-2 Calculate the observed risk premium in each year for the large-company stocks versus the T-bills. What was the standard deviation of the risk premium over this period? (Do not round intermediate calculations. Enter your answer as a percent rounded to 2 decimal places (e.g., 32.16).)
Standard deviation __%