Statistics at Square One

by T D V Swinscow, Revised by M J Campbell, University of Southampton

http://bmj.bmjjournals.com/collections/statsbk/index.shtml

HyperStat Online Textbook

by David Lane is an Associate Professor of Psychology, Statistics, and Management at Rice University

http://davidmlane.com/hyperstat/index.html

The Little Handbook of Statistical Practice

by Gerard E. Dallal, Ph.D, Chief, Biostatistics Unit, Jean Mayer USDA Human Nutrition Research Center on Aging at Tufts University

http://www.tufts.edu/~gdallal/LHSP.HTM

Textbook Examples

List of books by UCLA Academic Technology Services on longitudinal data analysis, regression analysis, multilevel modeling, survival analysis, survey sampling, and latent variable models/latent class models

Books contain a lot of examples on how to use common statistical packages for these methods

http://www.ats.ucla.edu/stat/examples/

Basic and Applied Research Methods in Behavioral Science

Online book by Lee A. Becker, Professor of Psychology at Colorado University - Colorado Springs, an intermediate course in experimental designs, topics include reliability, validity, statistical analysis of quasi-experimental designs, effect size

http://web.uccs.edu/lbecker/Psy590/default.html

Quantitative Research in Public Administration

Online book by G. David Garson, Professor of Public Administration at North Carolina State University for an intermediate course in research methodology, topics include multiple regression, logistic regression and structural equation modeling

http://www2.chass.ncsu.edu/garson/pa765/statnote.htm