""Without question, this text will be the most authoritative source of information on statistics in the human services. From my point of view, it is a definitive work that combines a rigorous pedagogy with a down to earth (commonsense) exploration of the complex and difficult issues in data analysis (statistics) and interpretation. I welcome its publication."" Praise for the First Edition Written by a social worker for social work students, this is a nuts and bolts guide to statistics that presents complex calculations and concepts in clear, easy to understand language. It includes numerous examples grounded in social work practice, data sets, and issues that students will encounter in social work practice. This updated second edition newly addresses the role that statistics plays in evidence-based practice and program evaluation, includes data sets and examples from new social work domains, and includes examples of qualitative and quantitative analysis. Key Features: Contains dozens of relevant problems each chapter Includes electronic data sets taken from actual social work arenas Provides PowerPoint slides and Instructor's Manual for professors Offers both SPSS and Excel Designed for stand-alone statistics courses or as an ancillary text