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  2. Population dynamics - Wikipedia

    en.wikipedia.org/wiki/Population_dynamics

    For example, say one wants to calculate with a calculator N 10, the population at the tenth generation, knowing N 0 the initial population and λ the finite rate of increase. With the last formula, the result is immediate by plugging t = 10 , whether with the previous one it is necessary to know N 9 , N 8 , ..., N 2 until N 1 .

  3. Malthusian growth model - Wikipedia

    en.wikipedia.org/wiki/Malthusian_growth_model

    P 0 = P(0) is the initial population size, r = the population growth rate, which Ronald Fisher called the Malthusian parameter of population growth in The Genetical Theory of Natural Selection, [2] and Alfred J. Lotka called the intrinsic rate of increase, [3] [4] t = time. The model can also be written in the form of a differential equation:

  4. List of countries by population growth rate - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by...

    The population growth rate estimates (according to the United Nations Population Prospects 2019) between 2015 and 2020 [1] This article includes a table of countries and subnational areas by annual population growth rate.

  5. Population model - Wikipedia

    en.wikipedia.org/wiki/Population_model

    One of the most basic and milestone models of population growth was the logistic model of population growth formulated by Pierre François Verhulst in 1838. The logistic model takes the shape of a sigmoid curve and describes the growth of a population as exponential, followed by a decrease in growth, and bound by a carrying capacity due to ...

  6. These cities saw the largest growth in population in the past ...

    www.aol.com/cities-saw-largest-growth-population...

    Population estimates from the U.S. Census Bureau for 2023, 2022 and 2018 were used to determine one-year and five-year population changes for cities with populations of at least 65,000 in 2023 for ...

  7. List of countries by past and projected future population

    en.wikipedia.org/wiki/List_of_countries_by_past...

    Thus, the figures after the 1960 column show the percentage annual growth for the 1955-60 period; the figures after the 1980 column calculate the same value for 1975–80; and so on. The formulas used for the annual growth rates are the standard ones, used both by the United Nations Statistics Division and by National Census Offices worldwide.

  8. Doubling time - Wikipedia

    en.wikipedia.org/wiki/Doubling_time

    As an example, Canada's net population growth was 2.7 percent in the year 2022, dividing 72 by 2.7 gives an approximate doubling time of about 27 years. Thus if that growth rate were to remain constant, Canada's population would double from its 2023 figure of about 39 million to about 78 million by 2050. [2]

  9. Population growth - Wikipedia

    en.wikipedia.org/wiki/Population_growth

    (2011) World population growth rates between 1950 and 2050. The world population growth rate peaked in 1963 at 2.2% per year and subsequently declined. [11] In 2017, the estimated annual growth rate was 1.1%. [30] The CIA World Factbook gives the world annual birthrate, mortality rate, and growth rate as 1.86%, 0.78%, and 1.08% respectively. [31]