Statistics is the field of knowledge concerned with data collection, data analysis, and data interpretation and presentation. Methodology comprises the many and varied structured ways in which research is conducted — answering the fundamental question: How does the researcher effectively gather information for particular purposes?

Both are core topics underlying the discipline of psychology and the other social, physical, and medical sciences. Moreover, a basic understanding of the language of statistics and research methods is required for any serious student, scientist, and practitioner in these fields.

The APA Dictionary of Statistics and Research Methods is a focused reference resource that explores the lexicon of these two profoundly interrelated areas. It provides:

Over 4,000 entries offering clear and authoritative definitions;
Balanced coverage in such core areas as research planning and design, psychometrics, quantitative and qualitative measurements, and data analysis;
Hundreds of incisive cross-references that deepen the user’s understanding of related topics;
More than 100 illustrations of some of the common and uncommon data display methods;
A Quick Guide to Use that explains stylistic and formal features at a glance; andAppendixes listing common abbreviations and statistical symbols

About the Author

Sheldon Zedeck, PhD, is a professor of psychology and of the Graduate School at the University of California, Berkeley, and the 2010 recipient of The Berkeley Citation for distinguished service to the campus. He is an industrial/organizational psychologist who has published articles on the topics of moderator variables, selection and validation, test fairness, high-stakes testing, statistical banding, performance appraisal, assessment centers, stress, and work and family issues. He has coauthored texts on data analysis and measurement theory. He is former editor of the Journal of Applied Psychology (2003–2008) and the editor in chief for the APA Handbook of Industrial and Organizational Psychology (2010). His research on law school admissions received the 2011 Smashing Bias Research Award (with M. Shultz) from the Level Playing Field Institute for the Promotion of Outstanding Research on Ensuring Fairness From the Classroom to the Boardroom.

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