Biostatistical Analysis, 5th Edition by Jerrold H. Zar :: Beginning with the first edition of this book. the goal has been to introduce a broad array of techniques for the examination and analysis of a wide variety of data that may be encountered in diverse areas of biological studies. As such, the book has been called upon to fulfill two purposes. First. it has served as an introductory textbook. assuming no prior knowledge of statistics. Second, it has functioned as a reference work consulted long after formal instruction has ended.