In: Finance
Consider the following table for a period of six
years:
| Returns | |||||||
| Year | Large-Company Stocks | U.S. Treasury Bills | |||||
| 1 | –14.99 | % | 7.35 | % | |||
| 2 | –26.56 | 8.02 | |||||
| 3 | 37.29 | 5.93 | |||||
| 4 | 23.99 | 5.37 | |||||
| 5 | –7.28 | 5.48 | |||||
| 6 | 6.63 | 7.73 | |||||
  
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 | % | 
| T-bills | % | 
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 percent
rounded to 2 decimal places, e.g., 32.16.)
| Standard deviation | |
| Large-company stock | % | 
| T-bills | % | 
Calculate the observed risk premium in each year for the
large-company stocks versus the T-bills.
a. What was the arithmetic average risk premium
over this period? (A negative answer should be indicated by
a minus sign. Do not round intermediate calculations and enter your
answer as a percent rounded to 2 decimal places, e.g.,
32.16.)
Average risk premium
            %
b. What was the standard deviation of the risk
premium over this period? (Do not round intermediate
calculations and enter your answer as a percent rounded to 2
decimal places, e.g., 32.16.)
  
Risk premium standard deviation
            %