Estimation

Estimation

Estimation is the calculated approximation of a result which is usable even if input data may be incomplete or uncertain.

In statistics,

In mathematics, approximation or estimation typically means finding upper or lower bounds of a quantity that cannot readily be computed precisely.

In signal processing, see estimation theory for approximating an unobserved signal on the basis of an observed signal containing noise.

In project management, see estimation (project management) for applications to project planning.

In physics, a Fermi problem is one concerning estimation in problems which typically involve making justified guesses about quantities that seem impossible to compute given limited available information.

See also


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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 — 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

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