17 About the Author

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](https://twitter.com/rdpeng).