1. Under what conditions can the B main effect in a three-way A x B x C design be interpreted unambiguously? 2. shows one way to plot the cell means of However, there are five additional ways these data could be displayed, because we could have separate plots for any of the three factors, and then either of the two remaining factors could be plotted on the x-axis. For example, we might choose to create one plot for the biofeedback-present condition and a second plot when biofeedback is absent. Further, we might choose to place level of diet on the x-axis. a. Draw this plot for the cell means. b. What features of the data are highlighted more clearly by the plot in part a than by the plot in c. What features of the data are highlighted more clearly by the plot in Figure 8.7 than by the plot in part a?
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