Line-of-sight velocity dispersion profiles for the Walker et al. (2007) uncleaned samples (grey circles) and our cleaned samples (red squares). In the left-hand panels we overplot the best fit MOND models (parameters listed in Table 2) and in the right-hand panels we plot the best fit cored dark matter halo models (parameters in Table 1). The two lines either side of the best fit are the 1-σ errors on the ρ_DM,0 and r_DM parameters.