Edward F. Vonesh, Ph.D., is self-employed as managing member of Vonesh Statistical Consulting, LLC, as well as a part-time employee of Northwestern University, where he supports research in his capacity as professor in the Department of Preventive Medicine. The author of numerous professional papers, he has published in the Journal of the American Statistical Association, Biometrika, Biometrics, and Statistics in Medicine. After twenty-nine years at Baxter Healthcare, Dr. Vonesh recently retired from his position as a senior Baxter research scientist. A SAS user since 1974, he received his B.S...