  We examine the fundamental plane of black hole activity for correlations with
redshift and radio loudness in both radio-loud and radio-quiet quasar
populations. Sources are compiled from archival data of both radio-loud and
radio-quiet quasars over redshifts $0.1 < z < 5.0$ to produce a sample of 353
sources with known X-ray, radio, and black hole mass measurements. A
fundamental plane of accretion activity is fit to a sample of radio-loud and
radio-quiet quasars, and we find a dichotomy between radio-loud and radio-quiet
sources. The set of best-fit equations that best describe the two samples are
$\log{L_{R}} = (1.12 \pm 0.06) \log{L_{X}} - (0.20 \pm 0.07) \log{M} -(5.64 \pm
2.99)$ for our radio-loud sample and $\log{L_{R}} = (0.48 \pm 0.06) \log{L_{X}}
+ (0.50 \pm 0.08) \log{M} + (15.26 \pm 2.66)$ for our radio-quiet sample. Our
results suggest that the average radio-quiet quasar emission is consistent with
advection dominated accretion, while a combination of jet and disc emission
dominates in radio-loud quasars. We additionally examine redshift trends
amongst the radio-loud and radio-quiet samples, and we observe a redshift
dependence for the fundamental plane of radio-loud quasars. Lastly, we utilize
the fundamental plane as a black hole mass estimation method and determine it
useful in studying systems where standard spectral modeling techniques are not
viable.
