Correlation between oxygen abundance and baryonic mass. The dIs are plotted with circles and BCDs with triangles. ﹩T_{e}﹩‐based abundances are plotted as filled symbols and ﹩R_{23}﹩‐based abundances as open symbols. Stellar masses were derived from sech magnitudes in ﹩K_{s}﹩. More massive dIs are more abundant in metals. Ignoring NGC 5264, the geometric linear fit to the dI data is drawn as a solid line. For comparison, the Lee et al. (2003b) fit is plotted with a dashed line.