Learn how to select the proper statistical procedure and interpret results. This title is a must for those who need a self-teaching text in statistical methods. The Third Edition of this bestselling text brings the methodology up to date in a very practical and accessible way and reflects how the changes in the computing environment have transformed the way statistical analyses are performed today. The authors have made several important and timely revisions, including: additional material on probability; new sections on odds ratios, ratio and difference estimations, repeated measure analysis, and logistic regression; printouts of computer analyses on all complex procedures; and, an accompanying Website illustrating how to use SAS[registered] and JMP[registered] for all procedures.