RAR and mass correlation of both BCGs and clusters. Left panel: black and green diamonds represent 50 MaNGA and 20 CLASH BCGs, while blue circles indicate data for 64 CLASH galaxy clusters. The solid black line illustrates the resulting RAR of all samples: . The shaded orange area illustrates the 1σ error of the best fit with the ODR MCMC method. The inset panel demonstrates the histograms of the orthogonal residuals of a whole sample (blue). For comparison, the galactic RAR is depicted by the dash-dotted line, while the dotted line represents the line of unity. Right panel: solid black line represents the mass correlation of all samples: . All symbols are the same as those in the left panel.