Assuming no prior knowledge, this text provides a concise, practical and accessible introduction to using, analysing and interpreting statistics and methodologies in empirical work using R or JASP. It takes an activity-based approach, in which students are first stimulated to consider a problem or question and find their own solution before the conventional way of solving that problem or question is introduced. 'How To' guides on R and JASP, which take students step-by-step through statistical analyses and practical assignments, are available on the book's companion website. This book will be an invaluable resource for undergraduate and postgraduate students of applied linguistics. New to this Edition: - Now focuses on R and JASP, two increasingly popular open source softwares used by linguists - 'How To' guides to help students strengthen their understanding and apply what they have learnt available on a companion site - Contains more comprehensive coverage of effect sizes, basic methods, regression theory, relationship studies and non-parametric tests Accompanying online resources for this title can be found at bloomsburyonlineresources.com/essential-statistics-for-applied-linguistics. These resources are designed to support teaching and learning when using this textbook and are available at no extra cost.