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squared difference

См. также в других словарях:

  • Difference of two squares — In mathematics, the difference of two squares, or the difference of perfect squares, is when a number is squared, or multiplied by itself, and is then subtracted from another squared number. It refers to the identity from elementary algebra.… …   Wikipedia

  • Squared deviations — In probability theory and statistics, the definition of variance is either the expected value (when considering a theoretical distribution), or average (for actual experimental data) of squared deviations from the mean. Computations for analysis… …   Wikipedia

  • Squared — Square Square, v. t. [imp. & p. p. {Squared} (skw[^a]rd); p. pr. & vb. n. {Squaring}.] [Cf. OF. escarrer, esquarrer. See {Square}, n.] 1. To form with four equal sides and four right angles. Spenser. [1913 Webster] 2. To form with right angles… …   The Collaborative International Dictionary of English

  • Pearson's chi-squared test — (χ2) is the best known of several chi squared tests – statistical procedures whose results are evaluated by reference to the chi squared distribution. Its properties were first investigated by Karl Pearson in 1900.[1] In contexts where it is… …   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

  • Chi-squared distribution — This article is about the mathematics of the chi squared distribution. For its uses in statistics, see chi squared test. For the music group, see Chi2 (band). Probability density function Cumulative distribution function …   Wikipedia

  • Aitken's delta-squared process — In numerical analysis, Aitken s delta squared process is a series acceleration method, used for accelerating the rate of convergence of a sequence. It is named after Alexander Aitken, who introduced this method in 1926 [Alexander Aitken, On… …   Wikipedia

  • Time Squared Academy High School — is a high school in Providence, Rhode Island that specialises in teaching students science and mathematics.The Mission of Times2 Academy for Engineering, Mathematics, Science and Technology is to educate the youth of Providence in careers in… …   Wikipedia

  • chi-squared test —   the comparison of an actual distribution of points with a random distribution of the same number of points to establish whether or not there is a significant enough difference to say that the actual distribution has occurred for a particular… …   Geography glossary

  • Minimum distance estimation — (MDE) is a statistical method for fitting a mathematical model to data, usually the empirical distribution. Contents 1 Definition 2 Statistics used in estimation 2.1 Chi square criterion …   Wikipedia

  • Tribimaximal mixing — cite journal | author = P.F. Harrison, D. H. Perkins and W. G. Scott | title = Tribimaximal mixing and the neutrino oscillation data | journal = Physics Letters B | volume = 530 | year = 2002 | pages = 167 | url = http://arxiv.org/pdf/hep… …   Wikipedia

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