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

1)Calculate the observed risk premium in each year for the large-company stocks versus the T-bills. What was the average risk premium over this period?

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?