Refer to the epilepsy study data in Table 3.19. Examine the scatterplots of Y1, Y2, Y3, and Y4 versus baseline count and age given here.

a. Does there appear to be a difference in the relationship between the seizure count (Y1 €“ Y4) and either the baseline count or age when considering the two groups (treatment and placebo)?
b. Describe the type of apparent differences, if any, that you found in part (a).

Seizure counts versus age and baseline counts +100 Trt 50 1.0 50 25 80 - 40 50 0 40 80 120 160 20 25 30 35 40 Base Age