Fully revised to reflect SAS Version 8.1, the second edition of this popular handbook gives concise, straightforward descriptions of how to conduct a range of statistical analyses. The authors have updated and expanded every chapter in this new edition, and have incorporated a significant amount of new material. The book now contains more graphical material, more and better data sets within each chapter, more exercises, and more statistical background for each method. Completely new topics include data description and simple inference for categorical variables, the general linear model, longitudinal data, and fitting mixture distributions by maximum likelihood.