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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.