Decline rate parameter Δm₁₅(B) vs. the mean I‐band flux 20 to 40 days after the time of B‐band maximum, showing three SNe from the RPK training set (squares), SNe 1992K and 1991bg (triangles), SN 1998bu (large circle), five SNe from the Calán/Tololo survey (crosses), six SNe from Riess et al. (1999; stars), four SNe from this paper and SN 1999aa (Paper I; small circles); the point with the horizontal error bar represents the mean of the values derived from the SN 1996X data sets of Riess et al. (1999) and Smith et al. (2001). The two objects found furthest from the third‐order regression line are labeled.