Intrinsic shape distributions deduced from the observed b/a distributions. Left panels: observed b/a distribution with the black lines, and the reprojected b/a distributions obtained from the modeled intrinsic shape distributions with the red dashed and the green dash-dotted lines for an oblate and prolate models, respectively. Middle panels: intrinsic minor-to-major axis (q) distributions obtained via modeling for the oblate and prolate models. Right panels: relation of the difference from the magnitude–surface brightness relation with the observed axis ratio. The Spearman’s rank correlation coefficient p and its uncertainty are reported in each scatter plot. Rows from top to bottom: analysis for dE(N), dE(nN) and late-type dwarfs, respectively.