Mass bias (Equation (26)) as a function of the selection criterion ν_threshold. The large red circles show the sample constructed in Section 2.1, whereas the green triangles represent the sample including the modification of halo triaxiality from Section 2.2. The dotted green line shows a quantitative estimate of the results with halo triaxiality (see Section 3.2 for details). The large red circles and the small black circles are slightly shifted leftward and rightward, respectively, from the green triangles to avoid overlaps.