Illustration of the goodness of the fit of the maximum likelihood model of the joint analysis in describing the VIMOS radially binned IFU velocity dispersion measurements of the nine SLACS lenses with VIMOS data in our sample. Blue points are the measurements with the diagonal elements of the measurement covariance matrix. Orange points are the model predictions with the diagonal elements of the model covariance uncertainties. The measurement uncertainties include the uncertainties in the quoted measurements and the additional uncertainty of σ_σ^P, sys. The model uncertainties include the lens model uncertainties and the marginalization over the λ_int and a_ani distribution (https://github.com/TDCOSMO/hierarchy_analysis_2020_public/blob/6c293af582c398a5c9de60a51cb0c44432a3c598/JointAnalysis/joint_inference.ipynb).