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  2. Weight function - Wikipedia

    en.wikipedia.org/wiki/Weight_function

    A weight function is a mathematical device used when performing a sum, integral, or average to give some elements more "weight" or influence on the result than other elements in the same set. The result of this application of a weight function is a weighted sum or weighted average .

  3. Weighted arithmetic mean - Wikipedia

    en.wikipedia.org/wiki/Weighted_arithmetic_mean

    When all weights are equal to one another, this formula is reduced to the standard unbiased variance estimator. Proof The Taylor linearization states that for a general ratio estimator of two sums ( R ^ = Y ^ Z ^ {\displaystyle {\hat {R}}={\frac {\hat {Y}}{\hat {Z}}}} ), they can be expanded around the true value R, and give: [ 2 ] : 178

  4. Lookup table - Wikipedia

    en.wikipedia.org/wiki/Lookup_table

    Functions involving two or more variables require multidimensional array indexing techniques. The latter case may thus employ a two-dimensional array of power[x][y] to replace a function to calculate x y for a limited range of x and y values. Functions that have more than one result may be implemented with lookup tables that are arrays of ...

  5. Equivalent weight - Wikipedia

    en.wikipedia.org/wiki/Equivalent_weight

    Much more serious was the problem of elements which form more than one oxide or series of salts, which have (in today's terminology) different oxidation states. Copper will react with oxygen to form either brick red cuprous oxide ( copper(I) oxide , with 63.5 g of copper for 8 g of oxygen) or black cupric oxide ( copper(II) oxide , with 32.7 g ...

  6. Weighted sum model - Wikipedia

    en.wikipedia.org/wiki/Weighted_Sum_Model

    For instance, the relative weight of the first criterion is equal to 0.20, the relative weight for the second criterion is 0.15 and so on. Similarly, the value of the first alternative (i.e., A 1) in terms of the first criterion is equal to 25, the value of the same alternative in terms of the second criterion is equal to 20 and so on.

  7. Wilks coefficient - Wikipedia

    en.wikipedia.org/wiki/Wilks_Coefficient

    One journal article has been written on the topic of Wilks formula validation. [2] Based on the men's and women's world record holders and the top two performers for each event in the IPF's 1996 and 1997 World Championships (a total of 30 men and 27 women for each lift), it concluded: There is no bias for men's or women's bench press and total.

  8. Mass versus weight - Wikipedia

    en.wikipedia.org/wiki/Mass_versus_weight

    Nevertheless, one object will always weigh more than another with less mass if both are subject to the same gravity (i.e. the same gravitational field strength). In scientific contexts, mass is the amount of "matter" in an object (though "matter" may be difficult to define), but weight is the force exerted on an object's matter by gravity. [1]

  9. Newton–Cotes formulas - Wikipedia

    en.wikipedia.org/wiki/Newton–Cotes_formulas

    It is assumed that the value of a function f defined on [,] is known at + equally spaced points: < < <.There are two classes of Newton–Cotes quadrature: they are called "closed" when = and =, i.e. they use the function values at the interval endpoints, and "open" when > and <, i.e. they do not use the function values at the endpoints.