The Second Edition of this bestselling text has been completely revised and updated. It provides a systematic introduction to the principal methods and techniques that students must understand to complete a module on statistics. Features new to this edition include: more introductory material especially in a new chapter on descriptive statistics, and much-expanded introductory chapters; more exercises and illustrative examples within the chapters; downloadable datasets with British and North American examples; SPSS for Windows and EXCEL used to illustrate the applied use of the methods.