absolute dispersion

мат.
абсолютная дисперсия

English-Russian scientific dictionary. 2008.

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  • Absolute deviation — In statistics, the absolute deviation of an element of a data set is the absolute difference between that element and a given point. Typically the point from which the deviation is measured is a measure of central tendency, most often the median… …   Wikipedia

  • Absolute configuration — (or group) and its stereochemical description e.g. R or S. [GoldBookRef|title=absolute configuration|url=http://goldbook.iupac.org/A00020.html] Absolute configurations for chiral molecules are traditionally obtained by X ray crystallography but… …   Wikipedia

  • Median absolute deviation — In statistics, the median absolute deviation (MAD) is a robust measure of the variability of a univariate sample of quantitative data. It can also refer to the population parameter that is estimated by the MAD calculated from a sample. For a… …   Wikipedia

  • Statistical dispersion — In statistics, statistical dispersion (also called statistical variability or variation) is variability or spread in a variable or a probability distribution. Common examples of measures of statistical dispersion are the variance, standard… …   Wikipedia

  • Mean absolute error — In statistics, the mean absolute error (MAE) is a quantity used to measure how close forecasts or predictions are to the eventual outcomes. The mean absolute error is given by As the name suggests, the mean absolute error is an average of the… …   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

  • Optical rotatory dispersion — is the variation in the optical rotation of a substance with a change in the wavelength of light. Optical rotatory dispersion can be used to find the absolute configuration of metal complexes. For example, when plane polarized white light from an …   Wikipedia

  • Mean absolute scaled error — In statistics, the mean absolute scaled error (MASE) is a measure of the accuracy of forecasts . It was proposed in 2006 by Australian statistician Rob Hyndman, who described it as a generally applicable measurement of forecast accuracy without… …   Wikipedia

  • Milky Way Galaxy — Large spiral galaxy (roughly 150,000 light years in diameter) that contains Earth s solar system. It includes the multitude of stars whose light is seen as the Milky Way, the irregular luminous band that encircles the sky defining the plane of… …   Universalium

  • DEMOGRAPHY — This entry is arranged according to the following outline: introduction size and geographical distribution of world jewry major geographical shifts of world jewry up to world war i 1914 TO 1939 the shoah 1948 TO 1970 1970 TO 2005 dispersion and… …   Encyclopedia of Judaism

  • Deviation (statistics) — In mathematics and statistics, deviation is a measure of difference for interval and ratio variables between the observed value and the mean. The sign of deviation (positive or negative), reports the direction of that difference (it is larger… …   Wikipedia

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