Numbers, Facts and Trends Shaping Your World

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    Methodology

    Data Sources The data in the report are derived from the public-use versions of the 2000 decennial census and the 2014 American Community Survey (ACS). The 2000 decennial census public-use file is a 5% sample of the U.S. population. The ACS contains more than 3 million records, or about 1% of the U.S. population. It […]

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    Appendix B

    An additional analysis stemming from the Kuriakose & Robbins piece is a scatter plot showing the number of questions (x-axis) against percentage of near duplicates (y-axis). This raised the question — if more questions in a survey cause a lower near duplicate rate, shouldn’t that be apparent in the scatter plot? One of the problems […]