ANOVA --Interaction Plots

1. Enter the values into one column and then list the levels of the factorA  in the second column, the levels of factor B in the third column and the levels of factor C in the third column . Your worksheet should look like this.

 length       Time        Heat      Machine
   6              8             W             A
   9              8             W             A
   1              8             W             A
   3              8             W             A
   7              8             W             B

1. Go to Stat, Basic Statistics, ANOVA, Interaction Plots. The following screen should appear.

1. Enter the variable that is being measured as the response. Enter the factors under the factors and hit o.k.
2. If you only have two factors you only get one plot. If you have three factors, you get a matrix of plots.