# precision

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## precision

[prə′sizh·ən]
(mathematics)
The number of digits in a decimal fraction to the right of the decimal point.
In air operations, pertaining to a navigational facility which provides a combined azimuth and glide slope guidance to a runway.
(science and technology)
The measure of the range of values of a set of measurements; indicates reproducibility of the observations.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

## Precision

a measure of the dispersion of the values of a random variable. The precision h is related to the standard deviation σ by the formula

This method of measuring dispersion is justified since, in the case of a normal distribution, the probability density of a random variable with precision h and mathematical expectation a is described by the formula

The precision is used as a measure of the dispersion primarily in gunnery theory and the theory of errors.

## precision

(mathematics)
The number of decimal places to which a number is computed.

Compare accuracy.

## precision

The number of digits used to express the fractional part of a number. The more digits, the more precision. See single precision and double precision. See also accuracy.
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References in periodicals archive ?
Also known as "cubist realists," Precisionists depict objects or subjects that can still be recognized, but present them in a reduced format emphasizing the fundamental geometry of forms.
Sheeler is associated with a group of American painters called Precisionists, and is best known for the streamlined imagery of his paintings and photographs of architectural and industrial subjects.
He did not burden his classes with the literalist and precisionist language of Star Trek's chief science officer "Mr.
That said, there are numerous genuinely poignant photos and stories, including a sprinkling of horses who have since died, particularly the multiple Grade 1 winner Precisionist, photographed the day before he was put down.
George Johnson's exceptionally concrete and painstakingly detailed narrative is unique in separatist writings, and the rigorous accusations he persisted in voicing against Thomasine seem idiosyncratic even among dissenters, known for their "precisionist" applications of Calvinist doctrine.
Hughes sees this painting as a precursor of pop art, a product of the precisionist school of painters, which includes Mardsen Hartley, Georgia O'Keeffe and Charles Sheeler.
It is interesting to imagine, with Escher's precisionist approach, what he could have done with computer-art software.
Previous Eclipse Award winners who died in 2006 included Favorite Trick, Horse of the Year as a two-year-old in 1997' sprinters Precisionist and Groovy' dual champion mare Paseana' and 32-year-old Bowl Game, a half-brother to Sea Pigeon.
Ultimately, however, he sees as key the presence or absence of a "precisionist revolution" pushed by groups advocating further reforms (whether Puritans or Pietists), which emerged in response to the perceived failure of the Reformation to Christianize society.
* The other name for "Precisionism" is "Cubist Realism." Students who know what Realism and Cubism are will probably be able to guess what Precisionist artists were trying to do.
Bringing a latter-day Precisionist approach to his figurings of the physical manifestations of American modernity, one whose flat plainspokenness also drew liberally on strategies from Pop and hard-edge abstraction, D'Arcangelo reimagined his surroundings as a psychogeographical terrain imbued with a certain kind of existential, even spiritual, longing.
(They belong to the precisionist movement in American painting, a style we get a silvery echo of in the New Yorker covers of Gretchen Dow Simpson.) As oils, Demuth's landscapes have been somewhat unfavorably compared with his watercolors, but I believe that the oils gave him a certain discipline which he needed in order to achieve the brilliance of his final watercolors of fruit and flowers, arranged in nearly musical compositions, animated by an almost musical invention, filled with inversions and repetitions--and done in colors so pure, certain, so free of accident, as to bear comparison with the flowers that are often their immediate subjects.

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