Numbers, Facts and Trends Shaping Your World

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    3. Political data in voter files

    Among the most important data on the voter files for the election analyst are the records for whether or not someone is registered to vote and whether they voted in a given election. These individual registration and turnout records come directly from records kept by each state for every election. The turnout record indicates whether […]

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    Methodology

    About the Pew Research Center’s Spring 2017 Global Attitudes Survey Results for the survey are based on face-to-face interviews conducted under the direction of D3 Systems, Inc. and ORB International. The results are based on national samples, unless otherwise noted. More details about our international survey methodology and country-specific sample designs are available here. Detailed […]

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    Appendix A: Survey methodology

    This study, sponsored by Pew Research Center, used online opt-in survey data collected by three commercial vendors. Each vendor provided their own sample and administered the survey themselves, based on a common questionnaire. While no vendor makes the claim that that these are probability-based samples, they are intended to represent the noninstitutionalized U.S. adult population, […]

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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 […]

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    Teens, Social Media and Technology 2018

    YouTube, Instagram and Snapchat are the most popular online platforms among teens. Fully 95% of teens have access to a smartphone and 45% say they are online almost constantly.

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    The Changing Profile of Unmarried Parents

    One-in-four parents living with a child in the United States today are unmarried, up from 7% in 1968. A growing share of unmarried parents are cohabiting partners.