Upper: observed stellar mass function (SMF, Φ) versus stellar mass for massive quiescent galaxies in bins of redshift. Lower: Fitted SMF (Φ) versus stellar mass for massive quiescent galaxies in bins of redshift. The solid line is our best-fit SMFs including the correction for Eddington bias, the dotted lines exclude the Eddington bias correction. The dotted lines show that we would significantly overestimate the number of most massive quiescent galaxies at z = 2 − 2.5 without the correction.