Probability density of the logarithmic ratio of radio to X-ray luminosity. We plot multiple realizations of our sample using statistical uncertainties of radio flux and X-ray flux. As in the rest of this paper, radio “luminosity” is defined as L_R ≡ νL_ν for ν = 5 GHz, whereas the X-ray luminosity is a true 2–10 keV bandpass luminosity. The uncertainty in the radio luminosity also incorporates our estimate of systematic uncertainty in converting from other frequencies to 5 GHz. The nearly 8 orders of magnitude probed by our sample is illustrated in this figure as is the larger fractional uncertainties in the AGNs.