Radial velocity anisotropy profiles for stacked clusters, where the stacking is in velocity dispersion. The bands show the 68% and 95% regions, and the black curve is the median profile. Top: z < 0.2. Bottom: z > 0.2. The bottom-right plot shows the value of β(r = r₂₀₀) with 68% error bars (blue and red for z < 0.2 and z > 0.2, respectively). In all plots, the vertical dashed lines indicate the average r_ap, 200 in the corresponding velocity dispersion bin.