In Chapter 16 we had three different examples in which we compared three groups on the basis of smoking behavior. We can set this design up as a factorial by using Task as one variable and Smoking group as the other. The dependent variable was the number of errors the participant made on that task. These data are repeated below.

Pattern Recognition Recall Task Driving Simulation Non- Delay Active Non- Delay Active Non- Delay Active Smoke Smoke Smoke Smoke Smoke Smoke Smoke Smoke Smoke 9 12 8 27 48 34 15 7 3 8 7 8 34 29 65 2 0 2 12 14 9 19 34 55 2 6 0 10 4 1 20 6 33 14 0 0 7 8 9 56 18 42 5 12 6 10 11 7 35 63 54 0 17 2 9 16 16 23 9 21 16 1 0 11 17 19 37 54 44 14 11 6 8 5 1 4 28 61 9 4 4 10 6 1 30 71 38 17 4 1 8 9 22 4 60 75 15 3 0 10 6 12 42 54 61 9 5 0 8 6 18 34 51 51 3 16 6 11 7 8 19 25 32 15 5 2 10 16 10 49 49 47 13 11 3 Plot the cell means for this design.