Distributions of halo mass estimates for galaxies assigned to groups with M₁₈₀ < 10^12.5 M_⊙, and thus treated as field galaxies in our analysis. The red solid line shows the low-mass groups containing LERGs, and the black dashed line the groups containing their control galaxies. Applying a two-sample KS test to these distributions returns p = 0.98, consistent with both distributions being drawn from the same parent population. Halo mass estimates are obtained from the Yang et al. (2007) SDSS group catalog.