In this chapter we illustrate many of the ideas discussed in Chapters 2 and 3 by analyzing several of the datasets described in Chapter 1. For simplicity, we focus only on subjects with complete data. Missing data and dropout in these examples are addressed in a more definitive way in the analyses in Chapters 7 and 10. The sole purpose here is to illustrate using real data models from Chapter 2 and inferential methods described in Chapter 3.