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  2. Pivotal quantity - Wikipedia

    en.wikipedia.org/wiki/Pivotal_quantity

    Then is called a pivotal quantity (or simply a pivot). Pivotal quantities are commonly used for normalization to allow data from different data sets to be compared. It is relatively easy to construct pivots for location and scale parameters: for the former we form differences so that location cancels, for the latter ratios so that scale cancels.

  3. Pareto principle - Wikipedia

    en.wikipedia.org/wiki/Pareto_principle

    The Pareto principle may apply to fundraising, i.e. 20% of the donors contributing towards 80% of the total. The Pareto principle (also known as the 80/20 rule, the law of the vital few and the principle of factor sparsity [1] [2]) states that for many outcomes, roughly 80% of consequences come from 20% of causes (the "vital few").

  4. Dynamic rollover - Wikipedia

    en.wikipedia.org/wiki/Dynamic_rollover

    Only upon passing the pivot line will the object roll to the corresponding adjacent side of the base. The static rollover critical angle can be determined by measuring the angle between level ground and an imaginary line drawn from skid to skid, when the helicopter's center of gravity is located on the upward pivot line. [4] [5]

  5. Ancillary statistic - Wikipedia

    en.wikipedia.org/wiki/Ancillary_statistic

    In statistics, ancillarity is a property of a statistic computed on a sample dataset in relation to a parametric model of the dataset. An ancillary statistic has the same distribution regardless of the value of the parameters and thus provides no information about them.

  6. Fiducial inference - Wikipedia

    en.wikipedia.org/wiki/Fiducial_inference

    The pivotal method is based on a random variable that is a function of both the observations and the parameters but whose distribution does not depend on the parameter. Such random variables are called pivotal quantities. By using these, probability statements about the observations and parameters may be made in which the probabilities do not ...

  7. Vital effects - Wikipedia

    en.wikipedia.org/wiki/Vital_effects

    The earliest example of this work is using oxygen isotopes from the calcium carbonate (CaCO 3) in belemnites to reconstruct paleotemperatures. [1] It is important to understand vital effects because they affect how paleoclimatic data are interpreted, which influences how scientists predict future impacts of climate change.

  8. The 5 Worst Restaurant Ripoffs, According to Chefs - AOL

    www.aol.com/finance/5-worst-restaurant-ripoffs...

    4. Certain Sushi Rolls. Pay attention to the descriptions when you read the menu at your favorite sushi joint, guys.One Redditor explained that the only difference between her restaurant's $3.75 ...

  9. Angiogenesis - Wikipedia

    en.wikipedia.org/wiki/Angiogenesis

    Angiogenesis is a normal and vital process in growth and development, as well as in wound healing and in the formation of granulation tissue. However, it is also a fundamental step in the transition of tumors from a benign state to a malignant one, leading to the use of angiogenesis inhibitors in the treatment of cancer . [ 9 ]