  The RooStats toolkit, which is distributed with the ROOT software package,
provides a large collection of software tools that implement statistical
methods commonly used by the High Energy Physics community. The toolkit is
based on RooFit, a high-level data analysis modeling package that implements
various methods of statistical data analysis. RooStats enforces a clear mapping
of statistical concepts to C++ classes and methods and emphasizes the ability
to easily combine analyses within and across experiments. We present an
overview of the RooStats toolkit, describe some of the methods used for
hypothesis testing and estimation of confidence intervals and finally discuss
some of the latest developments.
