Statistics is a multidisciplinary subject utilized across various fields. This book focuses on problems related to the biological sciences, but it will undoubtedly benefit anyone seeking to deepen their understanding of statistics. It offers a structured approach to learning by presenting essential topics in a uniform and systematic format. One of the key features of this book is the inclusion of computer applications as well as CSIR-NET Life Sciences questions from previous years, complete with answers and explanations. Each topic begins with a concise overview of essential terminologies, followed by thorough explanations and clear illustrations using appropriate diagrams. I hope this book proves to be valuable to its readers.