My name is Mike Nguyen. My research interests include
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Postdoc in Marketing
University of Southern California
PhD in Marketing - minor Statistics
University of Missouri
MA in Economics - Econometrics and Quantitative Economics
University of Missouri
MBA in Marketing Analytics, Corporate Finance
University of Delaware
BBA in Marketing, International Business
Florida International University
R, SAS, STATA, SPSS
Python, NetLogo, Gephi
NEO4j, MongoDB
Put spend on the right-hand side of a fixed effects regression and the coefficient looks like marginal return. On simulated data with randomly assigned dose, it overstates the true marginal return by 31%. Here is why, and how the new contdid package fixes it.