Results of the King profile fit for the cluster NGC 752. Top panel: the blue dots are shown with Poissonian uncertainties. It also shows the best fit obtained with an ML estimator (solid black line), defined as the mode of the distributions of the parameters obtained through the 64 000 fits. The gray lines represent the uncertainties on the fits: we show 100 fits taken from the posterior distribution of the ML. Bottom panel: corresponding projection of the parameter posterior distribution. The orange lines show the mode of each distribution, and the dashed green line shows the 68% HDI.