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  2. Sampling (statistics) - Wikipedia

    en.wikipedia.org/wiki/Sampling_(statistics)

    In statistics, quality assurance, and survey methodology, sampling is the selection of a subset or a statistical sample (termed sample for short) of individuals from within a statistical population to estimate characteristics of the whole population. The subset is meant to reflect the whole population and statisticians attempt to collect ...

  3. Demography - Wikipedia

    en.wikipedia.org/wiki/Demography

    The Demography of the World Population from 1950 to 2100. Data source: United Nations — World Population Prospects 2017. Demography (from Ancient Greek δῆμος (dêmos) 'people, society' and -γραφία (-graphía) 'writing, drawing, description') [1] is the statistical study of human populations: their size, composition (e.g., ethnic group, age), and how they change through the ...

  4. Demographics of the United States - Wikipedia

    en.wikipedia.org/wiki/Demographics_of_the_United...

    This in turn led to a notable increase in the U.S. population in each of the years 2022, 2023, and 2024 (+0.58%, +0.83%, and +0.98%, respectively). [27] Population growth is fastest among minorities as a whole, and according to a 2020 U.S. Census Bureau analysis, 50% of U.S. children under the age of 18 are now members of ethnic minority groups ...

  5. Population and housing censuses by country - Wikipedia

    en.wikipedia.org/wiki/Population_and_housing...

    Between the national censuses, 1% National Population Sample Surveys were taken in 1987, 1995, and 2005; 0.1% National Population Sample Surveys have been taken annually since 2000. [65] National agricultural, economic, and industrial censuses are also taken on a regular basis. The first economic census was taken in 2004 and the second 2008. [66]

  6. Demographics of the world - Wikipedia

    en.wikipedia.org/wiki/Demographics_of_the_world

    As of 2009, the average birth rate (unclear whether this is the weighted average rate per country [with each country getting a weight of 1], or the unweighted average of the entire world population) for the whole world is 19.95 per year per 1000 total population, a 0.48% decline from 2003's world birth rate of 20.43 per 1000 total population.

  7. Demographic statistics - Wikipedia

    en.wikipedia.org/wiki/Demographic_statistics

    Demographic statistics are measures of the characteristics of, or changes to, a population. Records of births, deaths, marriages, immigration and emigration and a regular census of population provide information that is key to making sound decisions about national policy. [1] [2] A useful summary of such data is the population pyramid. It ...

  8. IPUMS - Wikipedia

    en.wikipedia.org/wiki/IPUMS

    IPUMS, originally the Integrated Public Use Microdata Series, [1] is the world's largest individual-level population database. IPUMS consists of microdata samples from United States (IPUMS-USA) and international (IPUMS-International) census records, as well as data from U.S. and international surveys. The records are converted into a consistent ...

  9. Historical racial and ethnic demographics of the United States

    en.wikipedia.org/wiki/Historical_racial_and...

    Racial and ethnic demographics of the United States in percentage of the population. The United States census enumerated Whites and Blacks since 1790, Asians and Native Americans since 1860 (though all Native Americans in the U.S. were not enumerated until 1890), "some other race" since 1950, and "two or more races" since 2000. [2]

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