Free on-line Stat help
- Kahn academy: https://www.khanacademy.org/math/ap-statistics
- A fun, supplementary guide that’s actually not bad, is The Cartoon Guide to Statistics.
- Hacking Chapter 6: The Basic Rules of Probability (pdf) [Link]
- P. Glasserman, Columbia Business School: Probability Basics (pdf) [Link]
Error Statistics Philosophy 