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# variability error

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• 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

• Observational error — is the difference between a measured value of quantity and its true value.[1] In statistics, an error is not a mistake . Variability is an inherent part of things being measured and of the measurement process. Contents 1 Science and experiments 2 …   Wikipedia

• Random error — Random errors are errors in measurement that lead to measurable values being inconsistent when repeated measures of a constant attribute or quantity are taken. The word random indicates that they are inherently unpredictable, and have null… …   Wikipedia

• Word error rate — (WER) is a common metric of the performance of a speech recognition system.The general difficulty of measuring performance lies in the fact that the recognized word sequence can have a different length from the reference word sequence (supposedly …   Wikipedia

• probable error — noun : regular deviation within a determined distance on each side of the mean of a frequency curve * * * Statistics. a quantity formerly used as a measure of variability: equal to 0.6745 times the standard deviation. A normally distributed… …   Useful english dictionary

• probable error — Statistics. a quantity formerly used as a measure of variability: equal to 0.6745 times the standard deviation. A normally distributed population has half of its elements within one probable error of the mean. [1805 15] * * * …   Universalium

• standard error — (of a mean) the extent to which the means of several different samples would vary if they were taken repeatedly from the same population. Differences between means are said to have statistical significance when they are greater than twice the… …   Medical dictionary

• variable error — noun : the variability of a subject s estimates of an objective magnitude measured by their average deviation …   Useful english dictionary

• Second language acquisition — is the process by which people learn a second language in addition to their native language(s). The term second language is used to describe the acquisition of any language after the acquisition of the mother tongue. The language to be learned is …   Wikipedia

• 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

• Regression dilution — is a statistical phenomenon also known as attenuation . Consider fitting a straight line for the relationship of an outcome variable y to a predictor variable x, and estimating the gradient (slope) of the line. Statistical variability,… …   Wikipedia