  By statistically analyzing a large sample which includes blazars of Fermi
detection (FBs) and non-Fermi detection (NFBs), we find that there are
significant differences between FBs and NFBs for redshift, black hole mass, jet
kinetic power from "cavity" power, broad-line luminosity, and ratio of core
luminosity to absolute V-band magnitude ($R_{\rm v}$), but not for ratio of
radio core to extended flux ($R_{\rm c}$) and Eddington ratio. Compared with
NFBs, FBs have larger mean jet power, $R_{\rm c}$ and $R_{\rm v}$ while smaller
mean redshift, black hole mass, broad-line luminosity. These results support
that the beaming effect is main reason for differences between FBs and NFBs,
and that FBs are likely to have a more powerful jet. For both Fermi and
non-Fermi blazars, there are significant correlations between jet power and the
accretion rate (traced by the broad-emission-lines luminosity), between jet
power and black hole mass; for Fermi blazars, the black hole mass does not have
significant influence on jet power while for non-Fermi blazars, both accretion
rate and black hole mass have contributions to the jet power. Our results
support the "blazar sequence" and show that synchrotron peak frequency
($\nu_{\rm peak}$) is associated with accretion rate but not with black hole
mass.
