Provides an easy-to-understand guide to statistical linear models and its uses in data analysis this book defines a broad spectrum of statistical linear models that is useful in the analysis of data. Considerable rewriting was done to make the book more reader friendly than the first edition. Linear models, second edition is written in such a way as to be self-contained for a person with a background in basic statistics, calculus and linear algebra. The text includes numerous applied illustrations, numerical examples, and exercises, now augmented with computer outputs in SAS and r. Also new to this edition is: a greatly improved internal design and format a short introductory chapter to ease understanding of the order in which topics are taken up discussion of additional topics including multiple comparisons and shrinkage estimators enhanced discussions of generalized inverses, the MINQUE, bayes and maximum likelihood estimators for estimating variance components furthermore, in this edition, the second author adds many pedagogical elements throughout the book.