Helpful Statistics Resources
Understanding NonParametric Statistics and Data Levels:
Tomkins, C. (2006). An introduction to non-parametric statistics for health scientists. University of Alberta Health Sciences Journal, 3(1), 20-21, 24-26. Retrieved from http://www.uahsj.ualberta.ca/files/Issues/3-1/pdf/20.pdf

Calculators
Webmath: http://www.webmath.com/  
Simple Interactive Statistical Analysis: http://www.quantitativeskills.com/sisa/

Helpful Links
Links to Teaching Resources: http://www.tcd.ie/Statistics/links/teaching.html
TILE: http://www.stat.berkeley.edu/users/nolan/TILE/General/links.html
Resources for Teaching Statistics: http://it.stlawu.edu/~rlock/tise98/onepage.html  
Links for Statisticians: http://schick.tripod.com/stat-links.html  
StatLib: http://lib.stat.cmu.edu/
Mathematics Archives: Lessons and Tutorials: http://archives.math.utk.edu/tutorials.html
Statistics Education: http://www.isds.duke.edu/sites/education.html

Software
Vista- The Visual Statistics System: http://www.visualstats.org/  
MINITAB: http://www.minitab.com/en-US/default.aspx  
SPSS: http://www.spss.com/
Statpac Survey Software: http://www.statpac.com/
  
General
Probability Central: http://library.thinkquest.org/11506/  
Advanced Statistics and Optimization: http://www.geocities.com/ResearchTriangle/System/3737/  
Percent and Probability: http://www.mathleague.com/help/percent/percent.htm#probability
The Internet Glossary of Statistical Terms: http://www.animatedsoftware.com/statglos/statglos.htm  
A Glossary of Statistics: http://linkage.rockefeller.edu/wli/glossary/stat.html  

Tutorials
Chi Square Tutorial and Calculator: http://www.evotutor.org/Statistics/St4A.html

Tools for Finding and Using Statistical Resources
National Library of Medicine: Finding and Using Health Statistics: http://www.nlm.nih.gov/nichsr/usestats/index.html