PDFs for 100 mock galaxies simulated reproducing the characteristics of the FLAMES dataset of Sculptor, in terms of number of stars, observations of each star, and velocity uncertainties of each observation, for a binary fraction f = 0.6. Lower panel: PDFs of the 100 mock galaxies overlaid. Upper panel: distribution of the maxima of each PDF with a Gaussian fit overlaid. In both panels, the green and orange vertical lines indicate the median of the distribution of maxima and the range that encloses the 68% of the simulations (1σ confidence level).