  The Monte Carlo simulations of pulsar periods, pulse-widths and magnetic
inclination angles are performed. Using the available observational data sets
we study a possible trial parent distribution functions by means of the
Kolmogorov-Smirnov significance tests. We also use an additional condition that
the numbers of generated interpulses, whether from both magnetic poles or from
single pole, are at the observed levels. We conclude that the parent
distribution function of magnetic inclination angles is neither flat nor cosine
but it is a more complicated function with a local maximum near alpha=25deg and
another weaker one near alpha=90deg. The plausible distribution function of
pulsar periods is represented by the gamma function. The beaming fraction
describing the fraction of observable radio pulsars is about 0.12.
