  A sample of radio-loud active galactic nuclei (AGN) at 2cm is studied to test
the isotropic distribution of radio sources in the sky and their uniform
distribution in space. The sample is complete flux-density limits of 1.5Jy for
positive declinations and 2Jy for declinations between 0 and -20 degrees. The
active galactic nuclei sample comprises of 133 members. Application of the
two-dimensional Kolmogorov-Smirnov test shows that there is no significant
deviation from the isotropic distribution in the sky, while the generalised
V/Vm test shows that the space distribution of AGN is not uniform at high
confidence level (99.9%). This is indicative of a strong positive evolution of
AGN with cosmic epoch implying that AGN (or jet activity phenomena) were more
populous at high redshifts. It is shown that the evolution depends strongly on
luminosity: low-luminosity QSOs show a strong positive evolution, while
high-luminosity counterparts do not seem to show any evolution with cosmic
epoch.
