UCLA Statistics has a pretty extensive list of resources on how to use R and GRASS. For those unfamiliar, R is a programming language and environment for statistical computing and graphics. GRASS is an open source geographic information system (GIS). And of course, both are completely free and completely useful.
Useful Stat Resources for R and GRASS
Projects by Nathan Yau See All →
Americans are Growing Bigger
We keep getting bigger. Watch overweight and obesity rates move up over several decades.