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    Appendix C: Adjustment procedures

    Raking Raked weights were created using the marginal distributions of the adjustment variables as derived from the synthetic population dataset, along with all two-way interactions of collapsed versions of the demographic variables. For the interactions, the 18-24 and 25-34 age categories were combined, the less than high school and high school graduate categories were combined, […]

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    Sharing the News in a Polarized Congress

    Political divides in the American news landscape do not end with Americans’ preferences for different news sources; rather, they extend to how members of the U.S. Congress communicate with constituents in the digital age.

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    Methodology

    About the Pew Research Center’s Spring 2017 Global Attitudes Survey Results for the survey are based on telephone and face-to-face interviews conducted under the direction of Princeton Survey Research Associates International and Kantar Public UK. The results are based on national samples, unless otherwise noted. More details about our international survey methodology and country-specific sample […]

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    Methodology

    Data sources for this report include the 1990 census, the 1995 and 2000 Current Population Survey, and the 2005-2015 American Community Survey, all from the U.S. Census Bureau. Data are adjusted and augmented for undercount. For details, see methodology of the Pew Research Center report “Overall Number of U.S. Unauthorized Immigrants Holds Steady Since 2009.” […]

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    Methodology

    About the Pew Research Center’s Spring 2017 Global Attitudes Survey Results for the survey are based on telephone and face-to-face interviews conducted under the direction of D3 Systems, Inc., ORB International, Princeton Survey Research Associates International, Kantar Public UK and Voices! Research & Consultancy. The results are based on national samples, unless otherwise noted. More […]