The bivariate probability distribution function and its projections for a sample of black holes with dynamically measured masses, under the presence of a sample selection depending on the resolution of the black hole’s sphere of influence. A threshold of R_inf/d_res > 1 (left panel) or R_inf/d_res > 0.1 (right panel) is applied to the sample. The dashed black line shows the input M_•-M_Bulgerelation, the thick black solid line highlights the “observed” relation  ⟨ μ ⟩ (s), and the red dashed dotted line indicates the “observed” relation  ⟨ s ⟩ (μ).