Study of the $WZ$ production at CMS

In this article we describe the methods of observing $WZ$ signal at CMS experiment at Large Hadron Collider. To reduce the dependence on Monte Carlo simulation we use data-driven techniques and estimate that $5\sigma$ significance of $WZ$ signal can be reached with less than 350 $pb^{-1}$ at 95~\% C.L. for $\sqrt{s}$ = 14 TeV. We also overview several models that would yield anomalous production of the $WZ$ final state, sensitivity to which can be achieved with less data.