Tutorial on the ANOVA test in statistics and probability, with a description, formulas, example, and a calculator applet. This is part of the larger site Virtual Statistician at http://web.mst.edu/~psyworld/virtualstat.htm

This applet simulates drawing samples of Reese?s Pieces from a candy machine. Users set the sample size, number of samples, and theta, the population proportion of orange pieces. The applet keeps track of each sample and displays a dotplot of the sample proportion of orange pieces. Users can also count the number of samples below, above, or between two proportions and superimpose the normal...

Regression contains three applets on linear, quadratic and exponential regression. Each allows the user to investigate the relationship between the scatter plot of entered data and the regression equation.

Every day we have to make decisions about uncertain events like, 'Is that my phone ringing or one on the television?', or, 'Is the person talking to me telling the truth?' In this tutorial, you will learn about the Signal Detection Theory (SDT) model of how people make decisions about uncertain events. This tutorial explains the theory behind signal detection, covers several SDT measures of...

This applet generates confidence intervals for means or proportions. The options for confidence intervals for means include ?z with sigma,? ?z with s,? or ?t.? The options for confidence intervals for proportions are ?Wald,? ?Adjusted Wald,? or ?Score.? Users set the population parameters, sample size, number of intervals, and confidence level. Click "Sample," and the applet will graph the...