To explore ways to increase the educational experience using animation versus static images in a learning environment, Cyril Rebetez and colleagues5 ran a factorial experiment that measured 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 that follows to analyze the experiment with the appropriate method. Identify the two factors, 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.
MINITAB output for Exercise 11.52
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Learning Setting Static Animated With Without With Without 58.9 48.9 51.8 53.0 51.3 49.8 61.5 47.8 Snapshots 42.0 53.9 54.4 47.6 50.5 50.2 47.0 52.4 57.7 55.9 57.2 65.1 59.3 65.7 60.8 59.3 64.3 66.4 63.1 55.8 57.9 61.5 61.2 61.9 ANOVA: Retention versus Setting, Snapshots Factor Setting Snapshots Analysis of Variance for Retention Type ixed fixed Levels Values 2 Animated, Static 2 With, Without Source Setting Snapshots Setting DF MS 1 722.95 722.95 6.04 6.04 44.56 0.37 0.000 0.547 Error Total S: 4.02793 Snapshots 1 40.73 28 454.28 31 1223.99 40.73 16.22 2.51 0.124 R-Sq 62.89% R-Sq (adj) 58.91% : :: Interaction of Settings bySnapshots Setning Animated 54 With Withoul Snapshots Main Effects of Settings and Snapshots Setting Saapshots 62 60 5 58 56 54 52 50 Animated Static With Without