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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. 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.

  4. Olympic-size swimming pool - Wikipedia

    en.wikipedia.org/wiki/Olympic-size_swimming_pool

    If the pool is used for Olympic Games or World Championships, then the minimum depth is increased to 2 metres (6 ft 7 in). [3] Whereas the Water Cube pool used for the 2008 Olympics was 3 metres (9 ft 10 in) deep, the temporary pool used in 2024 was only 2.2 metres (7 ft 3 in), which commentators suggested made for slower race times. [4]

  5. Pound (mass) - Wikipedia

    en.wikipedia.org/wiki/Pound_(mass)

    The pound or pound-mass is a unit of mass used in both the British imperial and United States customary systems of measurement.Various definitions have been used; the most common today is the international avoirdupois pound, which is legally defined as exactly 0.453 592 37 kilograms, and which is divided into 16 avoirdupois ounces. [1]

  6. Motor vehicle fatality rate in U.S. by year - Wikipedia

    en.wikipedia.org/wiki/Motor_vehicle_fatality...

    The 32,479 traffic fatalities in 2011 were the lowest in 62 years, since 1949. [5] For 2016, the NHTSA reported 37,461 people killed in 34,436 fatal motor vehicle crashes , an average of 102 per day. [ 6 ]

  7. List of radioactive nuclides by half-life - Wikipedia

    en.wikipedia.org/wiki/List_of_radioactive...

    37.5 2.25 protactinium-227: 38.3 2.30 americium-246: 39 2.3 uranium-241 [3] [4] 40 2.4 radium-227: 42.2 2.53 lead-197m1: 42.9 2.57 lawrencium-261: 44 2.6 polonium-202: 44.7 2.68 californium-245: 45.0 2.70 bismuth-213: 45.59 2.735 neptunium-231: 48.8 2.93 mercury-191: 49 2.9 berkelium-251: 55.6 3.34 mendelevium-258m: 57.0 3.42 uranium-229: 58 3. ...

  8. Paper size - Wikipedia

    en.wikipedia.org/wiki/Paper_size

    It has the height of Canadian P4 paper (215 mm × 280 mm, about 8 + 1 ⁄ 2 in × 11 in) and the width of international A4 paper (210 mm × 297 mm or 8.27 in × 11.69 in), i.e. it uses the smaller value among the two for each side. The table shows how this format can be generalized into an entire format series.

  9. List of countries by government budget - Wikipedia

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

    Net lending (+)/borrowing (-) is also equal to net acquisition of financial assets minus net incurrence of liabilities." [ 3 ] According to World Bank , "revenue is cash receipts from taxes, social contributions, and other revenues such as fines, fees, rent, and income from property or sales.