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The table below shows that from 2020 to 2050 and beyond to 2100, the bulk of the world's population growth is projected to take place in Africa. Of the additional 1.9 billion people projected between 2020 and 2050, 1.2 billion will be added in Africa, 0.7 billion in Asia and zero in the rest of the world.
In statistics, the 68–95–99.7 rule, also known as the empirical rule, is a shorthand used to remember the percentage of values that lie within an interval estimate in a normal distribution: 68%, 95%, and 99.7% of the values lie within one, two, and three standard deviations of the mean, respectively. In mathematical notation, these facts ...
Zipf's law ( / zɪf /, German: [t͡sɪpf]) is an empirical law that often holds, approximately, when a list of measured values is sorted in decreasing order. It states that the value of the n th entry is inversely proportional to n . The best known instance of Zipf's law applies to the frequency table of words in a text or corpus of natural ...
History 1983–1991: early years. AOL began in 1983, as a short-lived venture called Control Video Corporation (CVC), founded by William von Meister.Its sole product was an online service called GameLine for the Atari 2600 video game console, after von Meister's idea of buying music on demand was rejected by Warner Bros. Subscribers bought a modem from the company for $49.95 and paid a one ...
In mathematics, the logarithm is the inverse function to exponentiation. That means that the logarithm of a number x to the base b is the exponent to which b must be raised to produce x. For example, since 1000 = 103, the logarithm base of 1000 is 3, or log10 (1000) = 3.
Abbreviations have been introduced to cut down on the time it takes to respond online. The commonly known "LOL" has become globally recognized as the abbreviation for "laugh out loud" thanks to social media and use by people of all ages particularly as people grow up. Another trend that influences the way youth communicates is the use of hashtags.
v. t. e. The Richter scale [1] ( / ˈrɪktər / ), also called the Richter magnitude scale, Richter's magnitude scale, and the Gutenberg–Richter scale, [2] is a measure of the strength of earthquakes, developed by Charles Francis Richter in collaboration with Beno Gutenberg, and presented in Richter's landmark 1935 paper, where he called it ...
Overview and definitions This article or section uses color as the only way to convey important information. To meet Wikipedia's web accessibility guidelines, please help improve this article or section so it is easier to read by those with disabilities by adding an additional means for these readers to access the relevant information. See the guides to editing for accessibility at contrast ...
Population: 84,607,016 (30 September 2023) Growth rate: 0.1 (2021) Birth rate: 9.3 births/1,000 population (2020) Death rate: 11.8 deaths/1,000 population (2020) Life expectancy
Skåne County (Swedish: Skåne län [ˈskôːnɛ ˈlɛːn] ), sometimes referred to as Scania County in English, is the southernmost county, or län, of Sweden, basically corresponding to the traditional province of Scania. It borders the counties of Halland, Kronoberg and Blekinge and connects to Capital Region, Denmark by the Öresund Bridge ...