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weighted mean difference

См. также в других словарях:

  • Weighted mean — The weighted mean is similar to an arithmetic mean (the most common type of average), where instead of each of the data points contributing equally to the final average, some data points contribute more than others. The notion of weighted mean… …   Wikipedia

  • Mean radiant temperature — The Mean Radiant Temperature (MRT) is a concept arising from the fact that the net exchange of radiant energy between two objects is approximately proportional to their temperature difference multiplied by their ability to emit and absorb heat… …   Wikipedia

  • Weighted voting systems — are based on the idea that not all voters are equal. Instead, it can be desirable to recognize differences by giving voters different amounts of say concerning the outcome of an election. This type of voting system is used in everything from… …   Wikipedia

  • Mean absolute percentage error — (MAPE) is measure of accuracy in a fitted time series value in statistics, specifically trending. It usually expresses accuracy as a percentage, and is defined by the formula: where At is the actual value and Ft is the forecast value. The… …   Wikipedia

  • Weighted-Average Life — The Weighted Average Life (WAL) of an amortizing loan or amortizing bond, also called average life, [ [http://www.pimco.com/LeftNav/BondResources/Glossary/ PIMCO glossary] ] is the weighted average of the times of the principal repayments : it s… …   Wikipedia

  • Mean squared error — In statistics, the mean squared error (MSE) of an estimator is one of many ways to quantify the difference between values implied by a kernel density estimator and the true values of the quantity being estimated. MSE is a risk function,… …   Wikipedia

  • Mean and predicted response — In linear regression mean response and predicted response are values of the dependent variable calculated from the regression parameters and a given value of the independent variable. The values of these two responses are the same, but their… …   Wikipedia

  • Sample mean and sample covariance — are statistics computed from a collection of data, thought of as being random.ample mean and covarianceGiven a random sample extstyle mathbf{x} {1},ldots,mathbf{x} {N} from an extstyle n dimensional random variable extstyle mathbf{X} (i.e.,… …   Wikipedia

  • WMD — may refer to:* Weapon of mass destruction, a term used to describe munitions with the capacity to kill large numbers of human beings indiscriminately * Weighted mean difference, a measure in statistical meta analysis * Wetland management district …   Wikipedia

  • Military anti-shock trousers — are medical devices used to treat severe blood loss. They are also indicated for the stabilization of unstable pelvic fractures in the field prior to transport. Usually called MAST , and sometimes pneumatic anti shock garments (PASG), they were… …   Wikipedia

  • Least squares — The method of least squares is a standard approach to the approximate solution of overdetermined systems, i.e., sets of equations in which there are more equations than unknowns. Least squares means that the overall solution minimizes the sum of… …   Wikipedia

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