Chapter 11 About the Authors

Roger D. Peng is a Professor of Biostatistics at the Johns Hopkins Bloomberg School of Public Health. He is also a Co-Founder of the Johns Hopkins Data Science Specialization, which has enrolled over 1.5 million students, the Johns Hopkins Executive Data Science Specialization, the Simply Statistics blog where he writes about statistics and data science for the general public, and the Not So Standard Deviations podcast. Roger can be found on Twitter and GitHub under the user name [@rdpeng](

Elizabeth Matsui is a Professor of Pediatrics, Epidemiology and Environmental Health Sciences at Johns Hopkins University and a practicing pediatric allergist/immunologist. She directs a data management and analysis center with Dr. Peng that supports epidemiologic studies and clinical trials and is co-founder of Skybrude Consulting, LLC, a data science consulting firm. Elizabeth can be found on Twitter [@eliza68](