Numbers, Facts and Trends Shaping Your World

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    Stefan Wojcik

    Stefan Wojcik is a former computational social scientist at Pew Research Center. He is an expert in applying data science tools and methods to social science research questions. His work involves using digital trace or social media data to understand the flow of information online, public opinion and behavior. Wojcik has authored reports on the […]

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    Appendix B: Synthetic population dataset

    Several of the adjustment approaches used in this study require a dataset that is highly representative of the U.S. adult population. This dataset essentially serves as a reference for making the survey at hand (e.g., the online opt-in samples) more representative. When selecting a population dataset, researchers typically use a large, federal benchmark dataset such […]

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    Methodology

    This report and accompanying digital interactive tool are based on a nationally representative Pew Research Center survey of 34,897 U.S. adults, conducted October 15-November 8, 2018, on both the Center’s American Trends Panel (ATP) and Ipsos’s KnowledgePanel. The first part of the report presents the survey results at the national level. The second and third parts […]

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