Variation in σ_NMAD as a function of the cut applied in r-band magnitude separately for red and blue galaxies. Each panel shows results for a different way of classifying the galaxies, using the strength of the 4000 Å break (top), the specific instantaneous SFR (middle), and the equivalent width of Hα (bottom). Solid lines correspond to σ_NMAD values at 100% completeness (no cut in odds), and dotted lines indicate σ_NMAD values for a cut in odds corresponding to 50% completeness.