Fractional difference in the newly determined ﹩{R}_{\star }﹩ vs. those previously reported in the literature as a function of the fractional change in the distance for transiting-planet hosts (left) and radial-velocity planet hosts (right). Color represents ﹩{T}_{\mathrm{eff}}﹩. Lines represent the one-to-one relationship of Δ﹩{R}_{\star }﹩ ∼ Δd and the range of variation arising from the ﹩{R}_{\star }﹩ errors determined in this work (see also Figure 7). The case of XO-3b is identified and discussed further in the text (see also Figure 11).