Table 92 Average Returns for Bonds 1950 to 1959 1960 to 1969 1970 to 1979 1980 to 1989 1990 to 1999 2000 to 2009 Average Average Average Average Average Average Long-Tere Treasury Bonds 0.0% 1.6 5.7 13.5 9.5 8.0 Table 9 4 Annual Standard Deviation for Bonds 1950 to 1959 1960 to 1969 1970 to 1979 1980 to 1989 1990 to 1999 2000 to 2009 Long-Term Treasury Bonds 4.9% 6.2 6.0 15.1 12.8 10.3 Use the tables above to calculate the coefficient of variation of the risk-retum relationship of the bond market during each decade since the 1950s (Round your answers to 2 decimal places.) Sk at Use the tables above to calculate the coefficient of variation of the risk-return relationship of the bond market Since the 1950s. (Round your answers to 2 decimal places.) nces Cov Decade 1960s 1970s 1980s 1990s 20005