Favorite Statistical and Social Work Sites:

Dictionary of statistical terms:             http://www.animatedsoftware.com/statglos/statglos.htm

Excellent on-line statistics book:
http://www.statsoft.com/textbook/stathome.html

A well referenced guide to both statistics and research:
http://trochim.human.cornell.edu/

A fairly advanced multi-variate statistics textbook:
http://www.psychstat.smsu.edu/multibook/mlt00.htm

A link to 600 other statistics links:
http://www.math.yorku.ca/SCS/StatResource.html

American Statistica Association home page 
http://www.amstat.org/

Social Work Links:

Society for Social Work and Research
http://www.sswr.org/

Institute for the Advancement of Social Work Research
http://www.cosw.sc.edu/iaswr/

Society for the Study of Addiction
http://www.addiction-ssa.org/ssa_7.htm

Research Society on Alcoholism
http://www.RSoA.org/

National Association of Social Workers
http://www.naswdc.org/