Total GC numbers (N_GC) for all the dwarf galaxies in this work. The vertical (grey) lines represent the N_GC and their uncertainties for individual dwarf galaxies. The solid curve and the shaded regions around it represent the average (mean) N_GC and 68% confidence intervals for dwarf galaxies within a moving bin along stellar mass (x-axis) with a width of 0.5 dex. The confidence intervals are based on 1000 bootstrap-repetitions of the estimates using bootstrap sample sizes of 95% of the initial sample sizes.