The following is the model of Sample Space with Event A. N points are selected at random (or equiprobable ). The probability P(A), can be approximated by the ratio of the number of points inside A and the total number of points n.
This applet illustrates many features of a two-factor analysis of variance. Allows the user to adjust the group size and group means. Gives output of ANOVA table and a Venn diagram showing how the sum of squares total is divided among SSA, SSB, SSAxB, and SSE. Contains instructions on how to use the applet and an exercise set.