11.50 Animation Helps? To explore ways to increase the educational experience using animation versus static images in a learning environment, Cyril Rebetez and colleagues ran a factorial experiment that measured the retention of information under four factorial conditions: with animation or without animation; and reinforcement through snapshots or without snapshots of the major frames in the animation. It was expected that the animation would lead to better retention of information and that having the snapshots available would also help with retention of information. The following data are based on the results of their experiment:

Use the MINITAB output to analyze the experiment with the appropriate method. Identify the two fac- tors, and investigate any possible effects due to their interaction or the main effects. What are the practical implications of these results? Why do the interaction plots seem counterintuitive to the analysis? If the interaction effect is real, what might you do as an experimenter to show that the interaction is, in fact, significant? Explain your conclusions in the form of a report.

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Learning Setting Static Animated Snapshots Without With Without With 58.9 42.0 57.7 64.3 48.9 53.9 55.9 66.41 51.8 54.4 57.2 63.1 53.0 47.6 65.1 55.8 51.3 50.5 59.3 57.9 49.8 50.2 65.7 61.5 61.5 47.0 60.8 61.2 47.8 52.4 59.3 61.9.