Definitions
from The American Heritage® Dictionary of the English Language, 5th Edition.
- noun The 18th letter of the Greek alphabet.
- noun A sigma factor.
- noun Statistics The standard deviation of a given probability distribution or a given set of data.
from The Century Dictionary.
- noun The curve of the letter S or any approximate curve.
- noun In descriptive biol., one of the S-shaped ridges on the surface of certain molluscan shells, as those of gastropods and cephalopods.
- noun In experimental psychology, the time-unit, of a second: abbreviated
σ . - noun The name of the Greek letter
Σ, σ, ς , equivalent to the English S, s. (For its early forms, see under S.) - noun An S-shaped or sigmoid flesh-spicule of a sponge.
from the GNU version of the Collaborative International Dictionary of English.
- noun The Greek letter Σ, σ, or ς (English S, or s). It originally had the form of the English C.
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun The name for the eighteenth letter of the
Classical andModern Greek , the nineteenth letter ofOld andAncient . - noun mathematics The symbol Σ, used to indicate
summation of aset orseries . - noun statistics The symbol σ, used to indicate one
standard deviation from themean , particularly in anormal distribution .
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- noun the 18th letter of the Greek alphabet
Etymologies
from The American Heritage® Dictionary of the English Language, 4th Edition
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Examples
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"Three sigma" is a manufacturing concept used to control processes, a concept that I am intimately familiar with.
Blogrolling: A Mini-Me? Candid Engineer 2009
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The standard of comparison, 125 [sigma], is shorter than most of the reaction times recorded, but since the time measured was always that from the breaking to the making of the circuit passing through the chronoscope it cannot be urged that there were errors resulting from the difference of magnetization which was caused by variations in the reaction time.
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I called sigma support line and they gave mixed opinions.
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I called sigma support line and they gave mixed opinions.
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He was as honorably decorated as any of the American Joint Chief’s of Staff; even wearing his gold colored in sigma upon his green military cap.
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This significance is 3.8 sigma, which is comparable to the UTfit difference, although in a totally different process.
New Physics in Heavy Flavors: The plot thickens « Imaginary Potential 2008
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Also, I believe Toyota is six sigma, which is less than 3.4 errors/1 million chances or 00. 00034%, so they would tear their arms out if they were at 00.04%. —
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Summers quoted at Marginal Revolution rationalized by talking about the gender ratios at 3.5-4 sigma, which is above the 99.9th percentile.
Coyote Blog » Blog Archive » So Lawrence Summers Was Fired For Being Correct? 2008
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Usually we demand five sigma, that is five standard deviations from the peak, to claim “discovery.”
Bump Hunting (Part 2) John 2007
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Often, that level of probability is arbitrarily set to a value like 95%, or two standard deviations, two sigma, which is about 98% for a normal distribution.
Archive 2007-10-01 James Killus 2007
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When I ask a small sample of 15-year-olds what comes to mind when they hear the word “sigma”, the universal response is: “cringe”.
The sad, stupid rise of the sigma male: how toxic masculinity took over social media Steve Rose 2024
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Sitting outside this imaginary pyramid of masculinity were sigmas – “the lone wolves”.
The sad, stupid rise of the sigma male: how toxic masculinity took over social media Steve Rose 2024
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Beale defined sigmas as “outsiders who don’t play the social game and manage to win at it anyhow” and who “often like women, but also tend to be contemptuous of them”.
The sad, stupid rise of the sigma male: how toxic masculinity took over social media Steve Rose 2024
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First coined by far-right activist and writer Theodore Robert Beale on a fringe nationalist blog in 2010, the sigma male describes an introverted alpha male who likes to “play by his own rules”.
Rise and grind: how ‘sigma males’ are upturning the internet Dazed 2022
missanthropist commented on the word sigma
Greek C~shaped.
July 11, 2008
tankhughes commented on the word sigma
talking about the semantics of the phrase what the sigma and more generally, brainrot. https://www.instagram.com/reel/C6Y5AISC78A/
May 3, 2024