Pew Research Center’s cross-national studies are fielded in a range of polling environments, ... Survey Mode and Sample Design; OTHER RESEARCH METHODS. U.S. Surveys; Data Science; Demographic Analysis ...

Aston University biostatistician Dr. Dan Green has identified the top ten errors he commonly sees in research papers in his ...

Detailed information on Pew Research Center international survey methodology, such as mode of interview, sampling design, margin of error, and design effect, for each country we survey, organized by ...