Mean L₆₀ of QSOs as a function of AGN bolometric luminosity L_bol, shown as colored dots with error bars. AGNs in the 0.5 < z < 1.0, 1.0 < z < 1.5, and 1.5 < z < 2.2 redshift bins are represented by blue, green, and red colors, respectively. The x-axis error bars show the range in L_bol that encompasses 80% of the sample in the corresponding bolometric luminosity bin. Dashed lines show the expected contribution to the FIR luminosity from pure AGN-heated dust (Eq. (1)). The lightly shaded colored polygons show the mean L₆₀ trends for X-ray AGNs from the fits in Rosario et al. (2012). The difference in the shape of the trends between X-ray AGNs and QSOs can be attributed to selection biases in the sample (see Sect. 5.2 for details).