Figure 10.9: Figure 10.6 The Effect of Calorie Content on Maze Travel Time There appears to be some decrease in the mean time it takes a rat to run the maze (i.e., an increase in speed) as the calorie content of the food in the goal box increases. But, the effect looks modest at best. A between-subjects, one-way ANOVA can be used to see if the effect is a statistically significant one or if the differences are due to sampling error.