Biostatistics or Biometrics is the study of the application of statistical methodology to analyse biological variations, correlation and regression in biological measurement. The book presents biological phenomena and observations by means of statistical analysis in a lucid and simple manner. It caters to the requirements of undergraduate courses in biological sciences, Zoology, Botany, Physiology, Microbiology, Biotechnology and Cytogenetics, in particular. Postgraduate students and researchers will also find it useful.