sufficient statistic


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sufficient statistic

[sə¦fish·ənt stə′tis·tik]
(mathematics)
A statistic that contains all the information that can possibly be obtained from a sample to estimate a specified parameter of the sampled population.
References in periodicals archive ?
* Arnaud Costinot and Ivan Werning, MIT and NBER, "Robots, Trade, and Luddism: A Sufficient Statistic Approach to Optimal Technology Regulation" (NBER Working Paper No.
A widely known article by Diamond and Saez (2011; DS hereafter) uses a technique known as the sufficient statistic approach to predict the top of the Laffer curve.
Guided by four predictions from a general equilibrium trade model, he found that railways '(1) decreased trade costs and interregional price gaps; (2) increased interregional and international trade; and (3) increased real income levels and that (4) a sufficient statistic [defined below] for the effect of railroads on welfare in the model (an effect that is purely due to newly exploited gains from trade) accounts for virtually all the observed reduced-form impact of railroads on real income in the data'.
Responding to a question, Yellen said, "The unemployment rate is not a sufficient statistic for the state of the labor market.
Moreover, [0] is a sufficient statistic for the PPS variables, and therefore, PPS variables merely re-express the overall mean difference between groups and contain no information about qualitative differences in performance between Black and White students at similar levels of [0] .
It can, for example, be determined whether [F.sub.ST] is a sufficient statistic for the divergence time.
Chamberlain [1982, 1984] suggests maximizing a likelihood function that is conditional on a sufficient statistic summarizing the latent characteristics.
If it is possible to construct a sufficient statistic S(Xi) for the incidental parameter [[theta].sub.i], in the presence of the item parameter [beta], we can factor the probability of the response pattern as
The approach Kimball and Willis propose steers a middle course between the two polar views that "happiness is irrelevant to economics" and the view that "happiness is a sufficient statistic for utility." They argue that felt happiness is not the same thing as flow utility, but that it does have a systematic relationship to utility.
Though it provides sufficient statistics and research reviews to satisfy the scholar, general readers will enjoy the intimacy the authors create through their vivid descriptions of the interiors of homes and the testimony provided by current residents, many of whom are descendants of the original settlers.
"There are no sufficient statistics issued about the number of special needs people here in the UAE.