In the realm of scientific research, biostatistics and research methodology play pivotal roles in ensuring the rigor, accuracy, and reliability of findings. The field of biostatistics provides the tools and techniques necessary to analyze and interpret data, while research methodology offers the framework for designing and conducting studies that can generate meaningful and valid conclusions. We are pleased to present Biostatistics and Research Methodology, a comprehensive guide aimed at bridging the gap between theoretical concepts and practical application in these critical areas. This book has been meticulously crafted by a team of dedicated professionals: Dr. Shama Afroze Baig, Mrs. Medikonda Soumya Devi, Dr. B. R. Asokan, and Dr. Trinayan Deka. Our collective expertise and experience have informed the content and structure of this text, making it an essential resource for students, researchers, and practitioners. The aim of this book is to provide a clear and accessible introduction to biostatistics and research methodology. We have endeavored to cover a wide range of topics, including fundamental statistical concepts, study design, data collection methods, and analytical techniques. Each chapter is designed to build a solid foundation in these areas, with practical examples and exercises that enhance understanding and application. Our approach integrates theoretical knowledge with practical insights, offering readers the tools needed to conduct high-quality research and make informed decisions based on statistical analysis. We have included numerous case studies and real-world examples to illustrate the application of concepts, helping to bridge the gap between theory and practice. Our thanks also go to the editorial and publishing team at Sprout Publication for their professionalism and dedication in preparing this book for publication. Their efforts have been essential in transforming our vision into a tangible resource. To our students and readers, we hope this book serves as a valuable tool in your academic and professional journey. Your pursuit of knowledge and dedication to research inspire us, and it is our hope that this book will support and enhance your efforts.