# estimation

estimation
/es'teuh may"sheuhn/, n.
1. judgment or opinion: In my estimation the boy is guilty.
2. esteem; respect.
3. approximate calculation; estimate: to make an estimation of one's expenditures.
[1325-75; ME estimacioun < MF < L aestimation- (s. of aestimatio). See ESTIMATE, -ION]
Syn. 2. appreciation, regard, honor, veneration.

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In mathematics, use of a function or formula to derive a solution or make a prediction.

Unlike approximation, it has precise connotations. In statistics, for example, it connotes the careful selection and testing of a function called an estimator. In calculus, it usually refers to an initial guess for a solution to an equation, which is gradually refined by a process that generates closer estimates. The difference between the estimate and the exact value is the error.

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in statistics, any of numerous procedures used to calculate the value of some property of a population from observations of a sample drawn from the population. A point estimate, for example, is the single number most likely to express the value of the property. An interval estimate defines a range within which the value of the property can be expected (with a specified degree of confidence) to fall. The 18th-century English theologian and mathematician Thomas Bayes (Bayes, Thomas) was instrumental in the development of Bayesian estimation to facilitate revision of estimates on the basis of further information. (See Bayes's theorem.) In sequential estimation the experimenter evaluates the precision of the estimate during the sampling process, which is terminated as soon as the desired degree of precision has been achieved.

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Universalium. 2010.

Synonyms:

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• estimation — [ ɛstimasjɔ̃ ] n. f. • 1263; lat. æstimatio « évaluation » 1 ♦ Action d estimer, de déterminer la valeur, le prix (d une chose). ⇒ appréciation, évaluation, expertise, prisée. L estimation d un mobilier, d une œuvre d art par un expert.… …   Encyclopédie Universelle

• Estimation — is the calculated approximation of a result which is usable even if input data may be incomplete or uncertain. In statistics, estimation theory and estimator, for topics involving inferences about probability distributions forecasting and… …   Wikipedia

• estimation — 1. Fowler described the use of estimation in the phrase in my estimation (= in my opinion) as ‘illiterate’, a verdict which is negated by several centuries of use in this meaning: • The dearest of men in my estimation E. W. Lane, 1841 • It was… …   Modern English usage

• estimation — es‧ti‧ma‧tion [ˌestˈmeɪʆn] noun [countable] 1. your opinion of the value, nature etc of someone or something: • His skills and abilities make him, in my estimation, an ideal candidate for the board of governors. 2. a calculation of what the… …   Financial and business terms

• estimation — estimation, estimate both mean the act of valuing or appraising, but they are rarely interchangeable. In general, estimation implies the manner or measure in which a person or thing is valued or esteemed {the degree in which he is held in… …   New Dictionary of Synonyms

• Estimation — Es ti*ma tion, n. [L. aestimatio, fr. aestimare: cf. F. estimation. See {Esteem}, v. t.] 1. The act of estimating. Shak. [1913 Webster] 2. An opinion or judgment of the worth, extent, or quantity of anything, formed without using precise data;… …   The Collaborative International Dictionary of English

• estimation — Estimation. s. f. v. Prisée. Juste estimation. on a fait la prisée & estimation des meubles. suivant l estimation qui en sera faite. je m en rapporte à l estimation des gens connoissants …   Dictionnaire de l'Académie française

• estimation — Estimation, AEstimatio. L estimation des heritages est petite, ils ne sont point de requeste, Iacent praediorum pretia. Faire estimation de son aisement, par la comparaison mal aisée d autruy, Ex alterius incommodis sua comparare commoda. Garder… …   Thresor de la langue françoyse

• estimation — I (calculation) noun admeasurement, appraisal, appraisement, approximate calculation, approximate judgment of value, approximation, assessment, assumption, computation, conjecture, considered guess, deduction, educated guess, estimate, evaluation …   Law dictionary

• estimation — late 14c., action of appraising; manner of judging; opinion, from O.Fr. estimacion, from L. aestimationem (nom. aestimatio) a valuation, from pp. stem of aestimare to value (see ESTEEM (Cf. esteem)). Meaning appreciation is from 1520s. That of… …   Etymology dictionary

• estimation — [n] belief, guess admiration, appraisal, appreciation, arithmetic, assessment, calculating, ciphering, computation, consideration, considered opinion, credit, esteem, estimate, estimating, evaluation, favor, figuring, impression, judgment,… …   New thesaurus