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This website, created by Craig A. Wendorf of the University of Wisconsin  Stevens Point, describes dummy coding for categorical variables. It is broken down into these categories: an overview of dummy variables, how to...
The eighth chapter of an online Introduction to Biostatistics course created by the faculty at the University of Massachusetts  Amherst. Lecture notes are provided and links for additional reading and exercises with...
This source, created by David M. Lane of Hyperstat Online, defines and explains variance and standard deviation. The page intertwines mathematical formulas with text to best introduce the topic. While brief, it still...
This applet generates a graph of the sampling distribution of sample means and displays the probabilities associated with that distribution. Users enter the mean and standard deviation of the source population and the...
This applet lets you highlight the set A, the set B, the set C, the universal set S, the empty set {}, the complement of A (Ac), the complement of B (Bc), the complement of C (Cc), the intersection of A and B (AB), the...

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