Thoroughly revised to cater the needs of Graduate and Post Graduate students spanning various colleges and Universities nationwide. This fourth revised edition has the following latest features. > The textbook is written in a clear lucid manner to cover the theortical, practical and applied aspect of biostatistics. > Well-labelled illustrations, diagrams, tables and adequate examples complement the text so that student may practice on their own. > Numerous examination oriented solved problems as well as number of topics viz set theory, Bionomial Expansion, Permutation, Combination and Non-Parametric Statistics have been incorporated. > Theortical Discussions as well as solution of problems have been represented in unambiguos language so as to clear to the needs of all students of Biosciences (Zoology, Botany, Physiology, Microbiology and Biotechnology etc.).