The seventh edition of BIOSTATISTICS represents 25 years of providing students with an integrated introduction to statistical analysis with health-sciences applications. As in previous editions, most of the examples and exercises presented make use of real data from 350 actual research projects and findings reported in health sciences literature. This text also encourages extensive use of computers and regularly employs printouts from Minitab SPSS, and SAS throughout the examples and computer analysis data sets included in the exercises.