The Inaugural Ross-Royall Symposium: From Individuals to Populations Wood Basic Sciences Auditorium Friday, February 26, 2016 8:30 am – 6:00 pm Erin Hartman, B.S., M.A., Ph.D. Assistant Professor, Department of Political Science and Statistics, University of California at Los Angeles Title: From SATE to PATT: Combining Experimental with Observational Studies to Estimate Population Treatment Effects Abstract: With internet surveys, nonrepresentativeness and nonresponse are bigger concerns than ever. The natural approach is to adjust for more information, demographic and otherwise, to align the sample with the population. We demonstrate the effectiveness of multilevel regression and poststratification (MRP, or Mister P) in internet surveys, and we also discuss some of the challenges and risks of this and other approaches.
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