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  2. Pythagorean addition - Wikipedia

    en.wikipedia.org/wiki/Pythagorean_addition

    Similarly, the version of hypot included with Ruby extends to Ruby-based domain-specific languages such as Progress Chef. [46] In Rust, hypot is implemented as a method of floating point objects rather than as a two-argument function. [47] Metafont has Pythagorean addition and subtraction as built-in operations, under the symbols ++ and ...

  3. Power (statistics) - Wikipedia

    en.wikipedia.org/wiki/Power_(statistics)

    A desired significance level α would then define a corresponding "rejection region" (bounded by certain "critical values"), a set of values t is unlikely to take if was correct. If we reject H 0 {\displaystyle H_{0}} in favor of H 1 {\displaystyle H_{1}} only when the sample t takes those values, we would be able to keep the probability of ...

  4. Sample size determination - Wikipedia

    en.wikipedia.org/wiki/Sample_size_determination

    The table shown on the right can be used in a two-sample t-test to estimate the sample sizes of an experimental group and a control group that are of equal size, that is, the total number of individuals in the trial is twice that of the number given, and the desired significance level is 0.05. [4] The parameters used are:

  5. How To Calculate the Present and Future Value of Annuity - AOL

    www.aol.com/calculate-present-future-value...

    In order to calculate the value of an annuity, you need to know the amount of each payment, the frequency of payments, the number of payments and the interest rates. To calculate the present value ...

  6. Dielectric withstand test - Wikipedia

    en.wikipedia.org/wiki/Dielectric_withstand_test

    In electrical engineering, a dielectric withstand test (also pressure test, high potential test, hipot test, or insulation test) is an electrical safety test performed on a component or product to determine the effectiveness of its insulation.

  7. Persistence of a number - Wikipedia

    en.wikipedia.org/wiki/Persistence_of_a_number

    The additive persistence of a number is smaller than or equal to the number itself, with equality only when the number is zero. For base b {\displaystyle b} and natural numbers k {\displaystyle k} and n > 9 {\displaystyle n>9} the numbers n {\displaystyle n} and n ⋅ b k {\displaystyle n\cdot b^{k}} have the same additive persistence.

  8. Fourier number - Wikipedia

    en.wikipedia.org/wiki/Fourier_number

    In the study of heat conduction, the Fourier number, is the ratio of time, , to a characteristic time scale for heat diffusion, . This dimensionless group is named in honor of J.B.J. Fourier , who formulated the modern understanding of heat conduction. [ 1 ]

  9. Fenske equation - Wikipedia

    en.wikipedia.org/wiki/Fenske_equation

    Fractionation at total reflux. The Fenske equation in continuous fractional distillation is an equation used for calculating the minimum number of theoretical plates required for the separation of a binary feed stream by a fractionation column that is being operated at total reflux (i.e., which means that no overhead product distillate is being withdrawn from the column).