This statistics book is designed for use with the OpenStat statistics program, an open-source software developed by William Miller. This book and the corresponding free program covers a broad spectrum of statistical theory and techniques. OpenStat users are researchers and students in the social sciences, education, psychology, nursing and medicine who benefit from the hands on approach to Statistics. During and upon completion of courses in Statistics or measurement, students and future researchers need a low cost computer program available to them, and OpenStat fills this void. The software is used in Statistics courses around the world with over 50,000 downloads per year. Also available is a user’s manual that covers applications of the OpenStat software, including measurement, ANOVA, regression analyses, simulation, product-moment and partial correlations, and logistic regression. This book and the companion User’s Manual are important learning tools that explain the statistics behind the many analyses possible with the program and demonstrate these analyses.