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Richard Lowry of Vassar College has created this java script which calculates the areas under the curve of the normal distribution falling to the left of z, to the right of +z, and between z and +z. This page is v...
This page, created by Richard Lowry of Vassar College, performs a "KolmogorovSmirnov goodness of fit test" for categorical data. Users enter observed frequencies and expected frequencies for up to eight mutually...
This applet, created Philip B. Stark of the University of California, Berkeley, lets you study the relationship between pairs of variables using scatterplots, the correlation coefficient, the graph of averages, linear...
This tool lets you calculate the probability that a random variable X is in a specified range, for a variety of probability distributions for X: the normal distribution, the binomial distribution with parameters n and p...
The controls on this applet let you change the number of trials, the probability of success in each trial, and toggle between viewing either the difference between the number of successes and the expected number of...

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