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 Statistics: Standard Deviation     In this video, Salman Khan of Khan Academy explains standard deviation. Khan Academy Statistics: Sample Variance     In this video, Salman Khan of Khan Academy explains sample variance. Khan Academy Statistics: Variance of a Population     In this video, Salman Khan of Khan Academy explains variance of a population. Khan Academy Calculations from Data     Site has a program where you can input data values and it will calculate the mean, standard deviation, or plot data on a histogram. WebMath Electronic Textbook on Statistics     You can search this electronic textbook for statistics topics including ANOVA, linear regression models, the effects of outliers, confidence intervals, etc. Gives explanations and discusses the topics. StatSoft Statistics overview: Vriance, Distribution and Sample Mean     Gives a brief introduction and overview of the fundamental statistic concepts. University of South Carolina Descriptive Statistics     Descriptive Statistics topics Wolfram MathWorld Introduction to the Normal Distribution     In this video, Salman Khan of Khan Academy explains the normal distribution. Khan Academy Statistics: Binomial Distribution 2     In this video, Salman Khan of Khan Academy explains binomial distribution. Part 2 of 4. Khan Academy Statistics: Binomial Distribution 1     In this video, Salman Khan of Khan Academy explains binomial distribution. Part 1 of 4. Khan Academy