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This page, created by Mark Plonsky of the University of Wisconsin  Stevens Point, gives a description of correlation, Pearson's r, Spearman's rho. There are some scatterplots illustrating the different values of r....
This library contains a plethora of downloadable applets and the components of the applets for use by teachers and students of probability and statistics. These objects (both executable files and source code) can be...
This one page article, created by Statistics Canada, describes the meaning behind random sampling error. It points our the relationship of the random sampling error with the sample size, population size, variability of...
The page will calculate the following: exact binomial probabilities, approximation via the normal distribution, approximation via the poisson distribution. This page will calculate and/or estimate binomial...
This website, created by Richard Lowry of Vassar College, illustrates the central limit theorem by allowing the user to increase the number of samples in increments of 100, 1,000, or 10,000. The sample size can be...

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