The library has a number of books on statistics, including books for statistics of various disciplines, programs like SPSS, Python, Perl, R, and more.
There is a Research Guide on Criminal Justice, including data on crimes and more. Here are a few government sources to highlight:
A number of have been digitized and made available to the general public. Access to these documents is often also provided with a number of supporting documents which provide analysis and useful context.
Many resources for and GIS data can be found in the Maps/Mapping guide.
can also be found in the Political Science & Public Administration guide, but here's a sampling of what's out there: