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  2. Fold change - Wikipedia

    en.wikipedia.org/wiki/Fold_change

    [8] [9] However, log-ratios are often used for analysis and visualization of fold changes. The logarithm to base 2 is most commonly used, [8] [9] as it is easy to interpret, e.g. a doubling in the original scaling is equal to a log 2 fold change of 1, a quadrupling is equal to a log 2 fold change of 2 and so on.

  3. Darcy friction factor formulae - Wikipedia

    en.wikipedia.org/wiki/Darcy_friction_factor_formulae

    9.287 = 18.574 / 2 = 2.51 × 3.7. The additional equivalent forms above assume that the constants 3.7 and 2.51 in the formula at the top of this section are exact.

  4. Exponentiation - Wikipedia

    en.wikipedia.org/wiki/Exponentiation

    Graphs of y = b x for various bases b: base 10, base e, base 2, base ⁠ 1 / 2 ⁠. Each curve passes through the point (0, 1) because any nonzero number raised to the power of 0 is 1 . At x = 1 , the value of y equals the base because any number raised to the power of 1 is the number itself.

  5. List of Asian countries by life expectancy - Wikipedia

    en.wikipedia.org/wiki/List_of_Asian_countries_by...

    Estimation of the World Bank Group for 2022. [2] [3] [4] The data is filtered according to the list of countries in Asia.The values in the World Bank Group tables are rounded

  6. Normal distribution - Wikipedia

    en.wikipedia.org/wiki/Normal_distribution

    Such variables may be better described by other distributions, such as the log-normal distribution or the Pareto distribution. The value of the normal density is practically zero when the value ⁠ x {\displaystyle x} ⁠ lies more than a few standard deviations away from the mean (e.g., a spread of three standard deviations covers all but 0.27 ...

  7. List of countries by current account balance as percentage of ...

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

    Quartile representation of current account balance as percent GDP by IMF WEO data Quartile representation of current account balance as percent GDP by CIA World ...

  8. List of countries by age at first marriage - Wikipedia

    en.wikipedia.org/wiki/List_of_countries_by_age...

    22.8 25.2 4.8 1.21 2020 [2] Namibia [a] 31.7: 29.2 30.5 2.5 1.09 2006-2007 [3] Niger: 22.8: 19.2 21 3.6 1.19 2017 [2] Nigeria : 24.8: 19.2 22 5.6 1.29 2018 [2] Rwanda [a] 24.7: 20.6 22.7 4.1 1.2 2010 [3] São Tomé and Príncipe [a] 24.1: 19.1 21.6 5 1.26 2008-2009 [3] Senegal: 31.8: 25.4 28.6 6.4 1.25 2022 [2] Seychelles: 35.3: 31.1 33.2 4.2 1 ...

  9. List of countries by alcohol consumption per capita - Wikipedia

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

    Worldwide consumption in 2019 was equal to 5.5 litres of pure alcohol consumed per person aged 15 years or older. [6] This is a decrease from the 5.7 litres in 2010.