Comparison between star-formation rates (SFRs) derived using infrared and radio data. Left: SFR derived from the infrared luminosity, SFR_IR, versus the SFR derived from the radio luminosity at 150 MHz. SFR_IR and SFR_150 MHz are in units of solar mass per year. The measurements for median LOFAR radio-undetected quasars (RUQs) (fuchsia and cyan squares), RUQs detected by SPIRE at 250 μm (yellow circles), and RUQs undetected by SPIRE at 250 μm (green circles) are showed. Upper limits are indicated by arrows in either SFR_IR or SFR_150 MHz. For median quasars, the increasing symbol size indicates an increment in the redshift or M₁₄₅₀ absolute luminosity. The dashed line is the far-infrared radio correlation (FIRC) at L_150 MHz derived by Calistro-Rivera et al. (2017). The gray shaded region indicates the spread of the FIRC scaled by a factor of ±2. The text indicates the median redshift of the first and last redshift bins of the stacking according to redshift. Right: Same as the right panel, but for the SFR at 1400 MHz, SFR_1400 MHz. The measurements for RUQs detected by WSRT, but undetected by SPIRE at 250 μm (purple circles); and RUQs detected by both SPIRE and WSRT at 250 μm and 1400 MHz (blue circles), respectively are also displayed.