This eighth edition of “Methods in Biostatistics for Medical Students and Research Workers” was prepared with the goal of attracting a varied audience. For beginners to advanced level students and virtually all research workers, this edition should provide an introduction to statistical concepts in the biosciences and health sciences and desired coverage to applied statistical concepts. This edition is designed to meet the needs of beginners in diverse fields such as nursing, public health and biomedical sciences; and microbiologists, who are looking for a strong foundation in biostatistics with the aid of computer technology. For advanced level professionals working in the health field, this enlarged edition can serve as a useful reference. In the current edition, many new formulas and real world problems have been included. This book does not require much complex mathematics.