Table 9.2 Average Returns for Bonds Table 9.4 Annual Standard Deviation for Bonds Use the tables above to caiculate the coefficient of variation of the risk-return relationship of the bond market during each decas since 1950. (Round your onswers to 2 decimol ploces.) Use the tables above to calculate the coefficient of variation of the risk-return relationship of the bond market during each decade since 1950 (Round your answers to 2 decimol places.)