Designed especially for business and social science readers who are familiar with the fundamentals of statistics, this book explores both the theory and practice of regression analysis. Describes the interaction between data analysis and regression models used to represent the data — to help readers learn how to analyze regression data, understand regression models, and how to specify an appropriate model to represent a data set. The main narrative in each chapter stresses application and interpretation of results in applied statistical methods from a user's point of view. Principles are introduced as needed.