unexplained variance

См. также в других словарях:

• Variance — In probability theory and statistics, the variance of a random variable, probability distribution, or sample is one measure of statistical dispersion, averaging the squared distance of its possible values from the expected value (mean). Whereas… …   Wikipedia

• Unexplained — means not explained and may refer to:* Unexplained , a 1992 rock music album by EMFTelevision * The Unexplained , a 1990s documentary television series * Unexplained Mysteries , a 2003 documentary television series * Unexplained Canada , a 2006… …   Wikipedia

• Fraction of variance unexplained — In statistics, the fraction of variance unexplained (or FVU) in the context of a regression task is the amount of variance of the regressand Y which cannot be explained, i.e., which is not correctly predicted, by the explanatory variable X .For a …   Wikipedia

• Law of total variance — In probability theory, the law of total variance or variance decomposition formula states that if X and Y are random variables on the same probability space, and the variance of X is finite, then:operatorname{var}(X)=operatorname{E}(operatorname{v… …   Wikipedia

• Coefficient of determination — In statistics, the coefficient of determination R2 is used in the context of statistical models whose main purpose is the prediction of future outcomes on the basis of other related information. It is the proportion of variability in a data set… …   Wikipedia

• Explained variation — In statistics, explained variation or explained randomness measures the proportion to which a mathematical model accounts for the variation (= apparent randomness) of a given data set. Often, variation is quantified as variance; then, the more… …   Wikipedia

• Omnibus test — Omnibus tests are a kind of statistical test. They test whether the explained variance in a set of data is significantly greater than the unexplained variance, overall. One example is the F test in the analysis of variance. There can be… …   Wikipedia

• Jornada Basin LTER — Jornada Basin Long Term Ecological Research program, in collaboration with the USDA ARS Jornada Experimental Range, studies the causes and consequences of desertification. Is interested in spatial and temporal variation in desertification… …   Wikipedia

• Human-capital theory — This is a moden extension of Adam Smith s explanation of wage differentials by the so called net (dis)advantages between different employments. The costs of learning the job are a very important component of net advantage and have led economists… …   Dictionary of sociology

• statistics — /steuh tis tiks/, n. 1. (used with a sing. v.) the science that deals with the collection, classification, analysis, and interpretation of numerical facts or data, and that, by use of mathematical theories of probability, imposes order and… …   Universalium

• List of statistics topics — Please add any Wikipedia articles related to statistics that are not already on this list.The Related changes link in the margin of this page (below search) leads to a list of the most recent changes to the articles listed below. To see the most… …   Wikipedia