Includes descriptions of distributions and tests, tables, all sorts. WikiPedia is a community resource so you can add anything that is missing! There is also a list of basic statistical topics if the big list looks too daunting!
Statistical links categorised by education level (K6 to Universty level), interactivity, media etc. Part of Topics in Mathematics site by Earl Fife and Larry Husch.
online textbook by David M. Lane
of Rice University. Covers basic areas and as you drill down the ToC has links to related resources, so a mini-portal too.
this webbook by G. David Garson describes itself as a textbook, but possibly more of a reference book as the language would be hard if you are a stats novice. Covers wide range of areas including more qualitative and scocial scxience techniques as well as 'hard' statistics.
Pretty full text book, although it starts with 'elementary concepts' perhaps not for the absoluite beginner, but does start fairly basic and fgoes into pretty detailed tests. Illustrated with Staistica screen shots, but not dependent on the software. Also includes a detailed statistics glossary.
WikiPedia article about this odd phenomena where averages of statistical measures seem to have an opposite trend to the individual measures. This is usually due to some confounding factor (e.g. social class and type of school attended)
