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  2. 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 ...

  3. Current Population Survey - Wikipedia

    en.wikipedia.org/wiki/Current_Population_Survey

    The Current Population Survey (CPS) [1] is a monthly survey of about 60,000 U.S. households conducted by the United States Census Bureau for the Bureau of Labor Statistics (BLS). The BLS uses the data to publish reports early each month called the Employment Situation. [ 2 ]

  4. Demographics of the world - Wikipedia

    en.wikipedia.org/wiki/Demographics_of_the_world

    According to the latest official data, the world population is 8,179,580,000 people. As of 2022, the world had 159 metropolitan areas with a population of over 3,000,000 people each. [31] As of 2010, about 3 billion people live in or around urban areas. [8] The following table shows the populations of the top thirteen conglomerations.

  5. US Census Bureau International Data Base - Wikipedia

    en.wikipedia.org/wiki/US_Census_Bureau...

    US Census Bureau International Data Base (IDB) is a global demographic product created by the United States Census Bureau. The U.S. Census Bureau has been preparing estimates and projections of the populations of foreign countries since the 1960s [1] for a number of reasons. In the 1980s, the Census Bureau released its first comprehensive set ...

  6. Sample size determination - Wikipedia

    en.wikipedia.org/wiki/Sample_size_determination

    The sample size is an important feature of any empirical study in which the goal is to make inferences about a population from a sample. In practice, the sample size used in a study is usually determined based on the cost, time, or convenience of collecting the data, and the need for it to offer sufficient statistical power. In complex studies ...

  7. 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]