Properties of the parent dwarf galaxy sample. Left: histograms of H I (blue) and stellar (orange) masses of the sample. The vertical line denotes the dwarf stellar mass limit of 5 × 10⁹ M_⊙. Right: systemic velocity vs. stellar mass of dwarfs in the sample, color-coded by the gas fraction. We show typical stellar mass error in the upper left corner. The vertical line is the same as in the left plot. On the right, we plot the histogram along the V_sys axis of our sample.