Elementary Concepts in Statistics from StatSoft A great site
for introduction and review of elementary statistical concepts
and illustrate the basic assumptions of most statistical methods
and/or have been demonstrated in research to be necessary
components of quantitative research.
History of Research Ethics
Prior to 1906, there were no regulations
regarding the ethical use of human subjects in research. This
website provides a brief discussion of why federal rules and
regulations were established and why the IRB became a necessity.