O'Reilly logo

Data Analysis and Graphics Using R, Third Edition by W. John Braun, John Maindonald

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

10

Multi-level models and repeated measures

This chapter further extends the discussion of models that are a marked departure from the independent errors models of Chapters 5 to 8. In the models that will be discussed in this chapter, there is a hierarchy of variation that corresponds to groupings within the data. The groups are nested. For example, students might be sampled from different classes, that in turn are sampled from different schools. Or, crop yields might be measured on multiple parcels of land at each of a number of different sites.

After fitting such models, predictions can be made at any of the given levels. For example, crop yield ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required