Mass–connectivity relation from Q1 data by considering clusters in three different redshift bins: 0.2 < z < 0.4 (left panel), 0.4 < z < 0.6 (middle panel), and 0.6 < z < 0.7 (right panel). The points are colour-coded by f_ETG fraction of early-type galaxies inside clusters (R < 2R_500c). The black solid lines show the connectivity–mass relation on average, with the connectivities measured at R = 2R_500c. In the bottom panel we show the connectivity residual, defined as κ − ⟨κ(M₅₀₀)⟩ to remove mass dependence. The red (and blue) solid lines represent the average profile for clusters with f_ETG lower than (higher than) the 30th(70th) percentile. The partial Pearson correlation between cluster connectivity and ETG fraction, beyond first-order mass dependence, is given at the bottom of the panels, with the correlation coefficient (r) and the p-value.