This intermediate-level statistics text is directed to the analysis of nonexperimental data of the kind found in economics and business studies, sociology, geography, and the behavioral sciences. In addition to the areas usually covered in texts at this level (i.e., univariate and bivariate analysis and multiple regression), the authors have included an introduction to topics of considerable practical utility that are usually considered beyond intermediate level. These include various multivariate methods and the analysis of the multiway contingency tables. The authors have also included, in a practical setting, the use of some distributions, such as the lognormal and the negative binomial.