• the concept of being an invariant estimator is a criterion that can be used to compare the properties of different estimators for the same quantity. It...
    15 KB (2,667 words) - 22:02, 30 January 2023
  • Thumbnail for Invariant (mathematics)
    computed invariant: ICount % 3 == 1 || ICount % 3 == 2 } Erlangen program Graph invariant Invariant differential operator Invariant estimator in statistics...
    24 KB (2,787 words) - 13:39, 3 April 2025
  • statistics, an estimator is a rule for calculating an estimate of a given quantity based on observed data: thus the rule (the estimator), the quantity...
    25 KB (3,723 words) - 17:48, 23 June 2025
  • data is an important property of various estimation methods; see invariant estimator for details. In pure mathematics, equivariance is a central object...
    12 KB (1,433 words) - 13:01, 3 June 2025
  • In statistics, the bias of an estimator (or bias function) is the difference between this estimator's expected value and the true value of the parameter...
    34 KB (5,367 words) - 15:44, 15 April 2025
  • The James–Stein estimator is an estimator of the mean θ := ( θ 1 , θ 2 , … θ m ) {\displaystyle {\boldsymbol {\theta }}:=(\theta _{1},\theta _{2},\dots...
    16 KB (2,147 words) - 08:30, 27 June 2025
  • Topological invariant Invariant (physics), something does not change under a transformation, such as from one reference frame to another Invariant estimator in...
    2 KB (261 words) - 04:04, 9 March 2023
  • data analysis the term fixed effects estimator (also known as the within estimator) is used to refer to an estimator for the coefficients in the regression...
    19 KB (3,166 words) - 13:36, 9 May 2025
  • Thumbnail for Median
    additional property that it is invariant under one-to-one transformation. — page 584 Further properties of median-unbiased estimators have been reported. There...
    63 KB (7,987 words) - 23:47, 14 June 2025
  • that characterizes the transformation of an arbitrarily crude estimator into an estimator that is optimal by the mean-squared-error criterion or any of...
    13 KB (2,174 words) - 20:32, 19 June 2025
  • Intervening variable Intra-rater reliability Intraclass correlation Invariant estimator Invariant extended Kalman filter Inverse distance weighting Inverse distribution...
    87 KB (8,280 words) - 23:04, 12 March 2025
  • Thumbnail for Theil–Sen estimator
    In non-parametric statistics, the Theil–Sen estimator is a method for robustly fitting a line to sample points in the plane (simple linear regression)...
    27 KB (2,818 words) - 22:30, 29 April 2025
  • population did not follow a normal distribution. Central tendency Invariant estimator Location parameter Location-scale family Mean-preserving spread Scale...
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  • expectations are invariant under reparameterization. As an example of the difference between Bayes estimators mentioned above (mean and median estimators) and using...
    11 KB (1,725 words) - 05:26, 19 December 2024
  • Thumbnail for Quantile regression
    the regression rank-score tests or with the bootstrap methods. See invariant estimator for background on invariance or see equivariance. For any a > 0 {\displaystyle...
    29 KB (4,109 words) - 04:27, 20 June 2025
  • Location test Invariant estimator Scale parameter Two-moment decision models Takeuchi, Kei (1971). "A Uniformly Asymptotically Efficient Estimator of a Location...
    6 KB (1,037 words) - 06:23, 11 June 2025
  • x i t {\displaystyle \Delta x_{it}} . The FD estimator avoids bias due to some unobserved, time-invariant variable c i {\displaystyle c_{i}} , using the...
    6 KB (1,102 words) - 18:33, 1 December 2024
  • Thumbnail for Standard deviation
    standard deviation. Such a statistic is called an estimator, and the estimator (or the value of the estimator, namely the estimate) is called a sample standard...
    59 KB (8,235 words) - 23:08, 17 June 2025
  • However, a major disadvantage is that (in finite samples) it is not invariant to changes in the representation of the null hypothesis; in other words...
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  • the method of conditional probabilities, the technical term pessimistic estimator refers to a quantity used in place of the true conditional probability...
    21 KB (3,157 words) - 16:49, 21 February 2025
  • not come for free: time-invariant explanatory and instrumental variables are not allowed. As in the usual FE method, the estimator uses time-demeaned variables...
    7 KB (1,021 words) - 09:55, 21 June 2024
  • In econometrics, the Arellano–Bond estimator is a generalized method of moments estimator used to estimate dynamic models of panel data. It was proposed...
    14 KB (2,167 words) - 06:02, 2 June 2025
  • I. Lee (2010) Sample-spacings based density and entropy estimators for spherically invariant multidimensional data, In Neural Computation, vol. 22, issue...
    10 KB (1,415 words) - 07:41, 28 April 2025
  • model is a scale model. Optimal equivariant estimators can then be derived for loss functions that are invariant. Basu's theorem Completeness (statistics)...
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  • In mathematical analysis, the Haar measure assigns an "invariant volume" to subsets of locally compact topological groups, consequently defining an integral...
    32 KB (5,375 words) - 03:20, 9 June 2025
  • alternative ways of calculating their values. The mean absolute difference is invariant to translations and negation, and varies proportionally to positive scaling...
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  • Thumbnail for Variance
    unbiased estimator (dividing by a number larger than n − 1) and is a simple example of a shrinkage estimator: one "shrinks" the unbiased estimator towards...
    61 KB (10,215 words) - 16:29, 24 May 2025
  • Thumbnail for Pearson correlation coefficient
    \quad } therefore r is a biased estimator of ρ . {\displaystyle \rho .} The unique minimum variance unbiased estimator radj is given by where: r , n {\displaystyle...
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  • published between 1959 and 1961. The Kalman filter is the optimal linear estimator for linear system models with additive independent white noise in both...
    27 KB (3,784 words) - 13:42, 30 June 2025
  • because asymptotic distribution of the second-step estimator generally depends on the first-step estimator. Accounting for this change in asymptotic distribution...
    7 KB (1,250 words) - 21:30, 24 February 2025