The third edition of this bestseller retains the author's trademark clear, concise style and focus on examples in the biological and environmental sciences. Topics include the material of multivariate analysis, matrix algebra, displaying multivariate data, and tests of significance with multivariate data. The book also explores measuring and testing multivariate distances; principal components and analysis; and factor, discriminant function, cluster, and canonical correlation analysis. Multidimensional scaling and ordination round out the coverage. The book also includes an appendix comparing and contrasting various statistical software packages, such as Stata, Statistica, SAS, and Genstat.