"A Dictionary of Research Methodology and Statistics in Applied Linguistics" is a comprehensive and authoritative reference guide that offers a detailed overview of important terms and concepts in the fields of research and statistics within the domain of applied linguistics. This volume focuses specifically on research in applied linguistics, aiming to clarify the meaning and application of various concepts, approaches, methods, designs, techniques, tools, types, and processes of research in a clear and efficient manner. It also includes entries that address statistical aspects, providing assistance to researchers in formulating, analyzing, and executing their research designs effectively, ensuring a logical progression from start to finish. With approximately 2000 entries covering essential research concepts and issues, this book incorporates cross-references where necessary to enhance understanding and facilitate navigation. It caters to a wide audience, including undergraduate and graduate students, teachers, lecturers, practitioners, researchers, consultants, and individuals seeking information in the field of applied linguistics and related disciplines.