See also Miscellaneous Links page.
StatSoft, Inc. (2010). Electronic Statistics Textbook. Tulsa, OK: StatSoft. WEB: http://www.statsoft.com/textbook/.
NIST/SEMATECH e-Handbook of Statistical Methods: Engineering Statistics Textbook
Wikipedia, The Free Encyclopedia, http://en.wikipedia.org/wiki/Statistics
ReliaSoft Corporation, www.weibull.com Reliability Engineering Resource Web Site.
StatProb: The Encyclopedia Sponsored by Statistics and Probability Societies, www.statprob.com
Princeton University - Data and Statistical Services (DSS) Online Training, http://dss.princeton.edu/training/
UCLA IDRE, https://stats.idre.ucla.edu/r/
Karl Wuensch's Statistics Lessons (East Carolina University Department of Psychology)
Karl Wuensch's Statistical Resources Links Pag (East Carolina University Department of Psychology)
Minitab has a number of useful articles that are available to all.
Open University - http://statistics.open.ac.uk/
See also Miscellaneous Links.
Penn State
Video Series "Against All Odds: Inside Statistics"
As the video series has 26 separate videos, here is a link to the page on this (Statwiki) site that provides links to the entire video series.
The videos on statistics at http://www.khanacademy.org/ appear to be useful tutorials on various topics in statistics. I have sampled a few and find the information credible.
When you go to the link, you will to scroll down the page to the section:
Introduction to statistics. Will eventually cover all of the major topics in a first-year statistics course (not there yet!)
Miscellaneous
Michigan Chemical Process Dynamics and Controls Open Textbook