A "Begin" button will appear on the left when the applet is finished loading. This may take a minute or two depending on the speed of your internet connection and computer. Please be patient. If no begin button appears, it is probably because your browser does not support Java 1.1.

This applet illustrates many features of a two-factor analysis of variance. The window that appears after you press the "Begin" button allows you to specify the MSE, the cell means for a 2 x 3 design, and the sample size. The ANOVA summary table is displayed in the lower-left-hand portion of the window. The right side of the window shows a figure of means and a Venn diagram showing how the sum of squares total is divided among SSA, SSB, SSAxB, and SSE.

You can change the means by entering values in the table or by dragging points in the figure.

The simulations were developed as part of a grant from NSF to David Lane of Rice University. Partial support for this work was provided by the National Science Foundation's Division of Undergraduate Education through grant DUE 9751307. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.