Written for students with little or no background in statistics and as a refresher course for graduate students and practitioners, this introduction focuses on statistical tools typically used in the social sciences. The text emphasizes experiential learning with criminal justice examples, along with step-by-step guidance in using SPSS Studentware to calculate statistics as researchers actually do in the field. It attempts to overcome student's anxieties and reluctance by demonstrating the actual use of statistics in criminal justice policy analysis. Additionally, this textbook features it's own author prepared COMPANION WEBSITE. Please visit http://www.prenhall.com/vito  to preview the Data Sets for Statistical Analysis, PowerPoint Presentations, additional SPSS Help, and Statistical Links.