In this video, Salman Khan of Khan Academy explains alternate variance formulas.
|
|
Khan Academy
|
|
A helpful scientific calculator that runs in your web browser window.
|
|
Holt Online Learning
|
|
Site contains several calculators evaluating several values in statistics including probabilties, t-test, ANOVA tests, least squares regression lines, etc.
|
|
Vassar Stats
|
|
Very comprehensive list of statistics formulas.
|
|
Stat Trek
|
|
Discusses Bayes' theorem in relation to mutually exclusive events and 2 ways to calculate the statement.
|
|
Interactive Mathematics
|
|
Definition of Quartiles, Five number summary, and Boxplot
Percentiles
z-scores
|
|
Quartiles, boxplots, percentiles, and z-scores
|
|
It also gives formulas, description, etc for statistics.
|
|
Wolfram Mathworld
|
|
Site gives detailed explanation of what a confidence interval implies and how to construct one.
|
|
Stat Trek
|
|
Flash tutorial with clear explanations about what deviation and variance mean along with how to calculate these by hand, using Excel and using the calculator.
|
|
Usable Stats
|
|
Central Limit Theorem Tutorial
|
|
Intro to the Central Limit Theorem Tutorial
|
|