Numbers, Facts and Trends Shaping Your World

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    Appendix A: Methodology

    Population Estimates and Projections: Definitions, Methods and Data Sources Overall Methodology The national projections presented here use a variant of the basic cohort component model in which the initial population is carried forward into the future by adding new births, subtracting deaths, adding people moving into the country (immigrants), and subtracting people moving out (emigrants). […]

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    Appendix A: About the Survey

    The bulk of the analysis in this report stems from a Pew Research Center survey conducted by telephone with a national sample of adults (18 years of age or older) living in all 50 U.S. states and the District of Columbia. The results are based on 2,002 interviews (801 respondents were interviewed on a landline […]

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    Appendix A: About the Survey

    The bulk of the analysis in this report stems from a Pew Research Center survey conducted by telephone with a national sample of adults (18 years of age or older) living in all 50 U.S. states and the District of Columbia. The results are based on 2,002 interviews (801 respondents were interviewed on a landline […]

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    About This Report

    This report provides a 100-year look at the impact of immigration on the nation’s demographics since passage of the 1965 Immigration and Nationality Act. It explores how the nation’s population has changed since the law was enacted and includes new Pew Research Center population projections through 2065. These projections are included for the nation as […]

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    References

    Anderson, Monica. 2015. “A Rising Share of the U.S. Black Population Is Foreign Born; 9 Percent Are Immigrants; and While Most Are from the Caribbean, Africans Drive Recent Growth.” Washington, D.C.: Pew Research Center, April. Barro, Robert and Jong-Wha Lee. 2013. “A New Data Set of Educational Attainment in the World, 1950-2010.” Journal of Development Economics 104 […]

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    Coverage Error in Internet Surveys

    With 89% of U.S. adults online, survey research is rapidly moving to the Web. But 89% is not 100%, and surveys that include only those who use the internet run the risk of producing biased results.

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    The art and science of the scatterplot

    This type of chart is growing more popular, but just half of those with a high school education or less correctly interpreted one in our science quiz.

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    About This Report

    Data for this report was collected for Pew Research Center. The survey was administered online by the GfK Group using its KnowledgePanel, in English and Spanish, to a nationally representative sample of 1,060 teens ages 13 to 17 and a parent or guardian from September 25 to October 9, 2014, and February 10 to March […]