# Formulas for Statistics

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 Statistics: Alternate Variance Formulas     In this video, Salman Khan of Khan Academy explains alternate variance formulas. Khan Academy Online Scientific Calculator     A helpful scientific calculator that runs in your web browser window. Holt Online Learning Complete List of Statistics Formulas     Very comprehensive list of statistics formulas. Stat Trek Bayes' Theorem Calculated 2 ways     Discusses Bayes' theorem in relation to mutually exclusive events and 2 ways to calculate the statement. Interactive Mathematics Standard Deviation Tutorial     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 Quartiles, boxplots, percentiles, and z-scores     Definition of Quartiles, Five number summary, and Boxplot Percentiles z-scores Quartiles, boxplots, percentiles, and z-scores Bayes Theorem     It also gives formulas, description, etc for statistics. Wolfram Mathworld Tutorial on Confidence Intervals     Site gives detailed explanation of what a confidence interval implies and how to construct one. Stat Trek Central Limit Theorem Tutorial     Central Limit Theorem Tutorial Intro to the Central Limit Theorem Tutorial Early Edge: Mode     In this Early Edge video lesson, you'll learn more about Mode, so you can be successful when you take on high-school Math & Arithmetic. The Princeton Review
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