"...I know of no better book of its kind..." (Journal ofthe Royal Statistical Society, Vol 169 (1), January2006)A revised and updated edition of this bestselling introductorytextbook to statistical analysis using the leading free softwarepackage RThis new edition of a bestselling title offers a conciseintroduction to a broad array of statistical methods, at a levelthat is elementary enough to appeal to a wide range ofdisciplines. Step-by-step instructions help thenon-statistician to fully understand the methodology. Thebook covers the full range of statistical techniques likely to beneeded to analyse the data from research projects, includingelementary material like t--tests and chi--squared tests,intermediate methods like regression and analysis of variance, andmore advanced techniques like generalized linear modelling.Includes numerous worked examples and exercises within eachchapter.