Histograms of the bulk densities of confirmed Kepler planets studied in this work (see Table 2). The gray dashed histogram shows all the measurements, excluding upper limits, while the black histogram shows only those planets for which both the primary and secondary density correction factors are defined (see text for details). The orange and green histograms show the densities after correcting the planet radii assuming that the planets orbit the primary or brightest companion star, respectively. The dark-gray area covers unphysically low densities, while the light-gray area covers densities of highly inflated planets.