This comprehensive and uniquely organized text is aimed at undergraduate and graduate level statistics courses in education and psychology. An organization scheme built around common issues and problems rather than statistical techniques allows students to understand the conceptual nature of statistical procedures. Likewise, it is so comprehensive and clearly written that instructors are freed from a considerable amount of didactic presentation thus allowing them to engage more with cases and examples of analysis. Whenever possible, presentations contain explanations of the underlying reasons behind a technique. For example, nearly all introductory texts specify that when doing chi-squared tests on count data, expected cell frequencies should be five or more but most don't tell why. This text does.