About Us


Mark Davis

Mark Davis is the founder of StataTutor.com. He holds a bachelor's and master's degree in economics from Hunter College with a concentration in econometrics. He has tutored Stata for over 1,000 hours and used Stata for over 10,000 hours. He works for a labor economics research center funded by the federal government. He has trained several research organization's staffs on the use of Stata for research.

He lives in Westchester County, New York with his cats and his wife Jenny, the baddest art librarian in the Hudson Valley.


Tim Copeland

Tim Copeland is a health policy & management PhD student at UCLA’s Fielding School of Public Health specializing in health outcomes research. Prior to his doctoral studies, he served as a research associate at the UC San Francisco, obtained his Master of Public Policy from the University of Southern California, and obtained his BA from the UC Berkeley. Tim has spent more than 4,000 hours working with Stata, over 300 hours privately teaching Stata and statistics, and has taught Stata labs for graduate courses in research methodology at UCLA. Tim’s specialty is in preparation of abstracts and manuscripts for audiences in clinical medicine, public health, and health policy. Tim is a coauthor on seven peer reviewed papers and two in progress.