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This page will calculate the 0.95 and 0.99 confidence intervals for rho, based on the Fisher rtoz transformation. To perform the calculations, enter the values of r and n in the designated places, then click the...
This website, created Richard Lowry of Vassar College, allows the user to provide two independent samples of sizes n_a and n_b, this page will estimate the significance of the difference between the means of the samples...
This website, created by Richard Lowry of Vassar College, calculates the zratio and associated onetail and twotail probabilities for the difference between two independent proportions. The page is very flexible in...
Calculates the zratio and associated onetail and twotail probabilities for the difference between two correlated proportions, such as might be found in the case where the proportions are based on the same sample of...
This page will calculate the lower and upper limits of the 95% confidence interval for the difference between two independent proportions, according to two methods described by Robert Newcombe, both derived from a...

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