Figure 1: Simulated data in four Scenarios A, B, C and D with different MSE and number of replicates (n) in each age group. All four scenarios have the same sets of sample means (25, 30, 40, 50, 55) for ages (11, 12, 13, 14, 15). The means are indicated by “+” and are connected using linear segments in each panel. The linear relationship between putative performance score and age is investigated using a contrast and its effect sizes.