Year Large Cap Stocks U.S. T-Bills
1970 3.94 6.50
1971 14.30 4.36
1972 18.99 4.23
1973 (14.69) 7.29
1974 (26.47) 7.99
1975 37.23 5.87
1) find out arithmetic average returns for large cap stocks and T-bills over the period.
2) find out standard deviation of returns for large cap stocks and T-bills over the period.
3) find out the observed risk premium in each year for large cap stocks vs. T-bills. What was the average risk premium over this period? What was the standard deviation of the risk premium over this period?