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This site, presented by the Department of Statistics at Yale University, gives an explanation of, a definition for and an example of confidence intervals. It covers topics including inference about population mean and...
This resource, created by author Will G. Hopkins, defines what a pvalue is, why .05 is significant, and when to use it. It also covers related topics such as onetailed/twotailed tests and hypothesis testing. Overall...
This page gives a short background on Student's ttest and provides three ttest calculators. Two perform ttests for independent groups and one performs ttests for matched pairs. Users type in individual data points...
Gives textbooklike explanation with some reallife data to compute a ttest and determine if two population means are equal. Also has some links for case studies and a webbased program called Dataplot. There is a...
This site, created by the Department of Statistics at Yale University, gives an explanation, a definition and an example of chisquare goodness of fit test. Topics include chisquare test statistics, tests for discrete...

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