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precision

precision The number of digits to which numbers are represented. For example, if p bits are allocated to the mantissa in the representation of floating-point numbers used in a particular computer, then in that computer floating-point numbers have p bits of precision. In general, the precision of floating-point numbers is proportional to their value (i.e. relative) whereas the precision of fixed-point numbers is absolute (independent of the value).

It is important not to confuse the term precision with accuracy. For example, the number 3.142 8571

has eight-decimal digit precision, irrespective of what it represents. If this number represents 22/7 then it is also accurate to eight decimal digits but if it represents the irrational number π then it is accurate only to three decimal digits.

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precision

pre·ci·sion / priˈsizhən/ • n. the quality, condition, or fact of being exact and accurate: the deal was planned and executed with military precision. ∎  [as adj.] marked by or adapted for accuracy and exactness: a precision instrument. ∎  technical refinement in a measurement, calculation, or specification, esp. as represented by the number of digits given: this has brought an unprecedented degree of precision to the business of dating rocks | a precision of six decimal figures. Compare with accuracy.

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"precision." The Oxford Pocket Dictionary of Current English. . Encyclopedia.com. 22 May. 2018 <http://www.encyclopedia.com>.

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precision

precision See ERRORS.

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"precision." A Dictionary of Earth Sciences. . Encyclopedia.com. 22 May. 2018 <http://www.encyclopedia.com>.

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precision

precisionabrasion, Australasian, equation, Eurasian, evasion, invasion, occasion, persuasion, pervasion, suasion, Vespasianadhesion, cohesion, Friesian, lesion •circumcision, collision, concision, decision, derision, division, elision, envision, excision, imprecision, incision, misprision, precisian, precision, provision, scission, vision •subdivision • television • Eurovision •LaserVision •corrosion, eclosion, erosion, explosion, implosion •allusion, collusion, conclusion, confusion, contusion, delusion, diffusion, effusion, exclusion, extrusion, fusion, illusion, inclusion, interfusion, intrusion, obtrusion, occlusion, preclusion, profusion, prolusion, protrusion, reclusion, seclusion, suffusion, transfusion •Monaghan • Belgian •Bajan, Cajun, contagion, TrajanGlaswegian, legion, Norwegian, region •irreligion, religion •Injun • Harijan • oxygen • antigen •sojourn • donjon • Georgian •theologian, Trojan •Rügen •bludgeon, curmudgeon, dudgeon, gudgeon, trudgen •dungeon • glycogen • halogen •collagen • Imogen • carcinogen •hallucinogen • androgen •oestrogen (US estrogen) •hydrogen • nitrogen •burgeon, sturgeon, surgeon

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"precision." Oxford Dictionary of Rhymes. . Encyclopedia.com. 22 May. 2018 <http://www.encyclopedia.com>.

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