Sigma (/ˈsɪɡmə/ SIG-mə; uppercase Σ, lowercase σ, lowercase in word-final position ς; Greek: σίγμα) is the eighteenth letter of the Greek alphabet. In...

Sigma Sigma Sigma (ΣΣΣ), also known as Tri Sigma, is a national American women's sorority. Sigma Sigma Sigma is a member of the National Panhellenic Conference...

Six Sigma (6σ) is a set of techniques and tools for process improvement. It was introduced by American engineer Bill Smith while working at Motorola in...

Sigma male (or simply sigma) is a term in internet slang used most often to describe the archetype of a male who is a "lone wolf". While the name is a...

Sigma Sigma (ΣΣ) is a men's upperclassmen honorary fraternity at the University of Cincinnati. Founded in 1898, it is the oldest of such organizations...

Phi Sigma Sigma (ΦΣΣ), colloquially known as Phi Sig, was the first collegiate nonsectarian sorority to allow membership of women of all faiths and backgrounds...

Two Sigma Investments, LP is a New York City-based hedge fund that uses a variety of technological methods, including artificial intelligence, machine...

Retrieved 2009-07-23. "Gamma Sigma Sigma - Service". Gamma Sigma Sigma. "Gamma Sigma Sigma - Our Organization". Gamma Sigma Sigma. Benton Harbor News Palladium...

Sigma Pi Sigma (ΣΠΣ), founded at Davidson College on December 11, 1921, is the oldest and only American honor society for physics and astronomy. It is...

Sigma Sigma Sigma sorority has 107 active chapters. Following is a list of Sigma Sigma Sigma chapters. Active chapters noted in bold, inactive chapters...

Sigma Chi (ΣΧ) International Fraternity is one of the largest of North American social fraternities. The fraternity has 244 active undergraduate chapters...

Sigma Mu Sigma (ΣΜΣ) is a former American college fraternity founded in 1921 at Tri-State University. Sigma Mu Sigma was historically an all-male social...

represented in mathematical texts and equations by the lowercase Greek letter σ (sigma), for the population standard deviation, or the Latin letter s, for the...

In mathematical analysis and in probability theory, a σ-algebra ("sigma algebra"; also σ-field) on a set X is a nonempty collection Σ of subsets of X...

Sigma-Aldrich (formally MilliporeSigma) is an American chemical, life science, and biotechnology company owned by the multinational chemical conglomerate...

In chemistry, sigma bonds (σ bonds) or sigma overlap are the strongest type of covalent chemical bond. They are formed by head-on overlapping between atomic...

A sigma factor (σ factor or specificity factor) is a protein needed for initiation of transcription in bacteria. It is a bacterial transcription initiation...

Delta-sigma (ΔΣ; or sigma-delta, ΣΔ) modulation is an oversampling method for encoding signals into low bit depth digital signals at a very high sample-frequency...

-1\sigma \leq X\leq \mu +1\sigma )&\approx 68.27\%\\\Pr(\mu -2\sigma \leq X\leq \mu +2\sigma )&\approx 95.45\%\\\Pr(\mu -3\sigma \leq X\leq \mu +3\sigma...

Sigma Derby is an electro-mechanical horse race used for gambling manufactured by Japanese manufacturer Sigma Game Inc. and introduced in 1985. Up to...

Sigma Sigma Phi (ΣΣΦ or SSP), is the national osteopathic medicine honors fraternity for medical students training to be Doctors of Osteopathic Medicine...

Sigma Phi Sigma (ΣΦΣ) was an American national collegiate fraternity founded in 1908 at the University of Pennsylvania. It ceased operations during WWII...

2 σ 2 . {\displaystyle f(x)={\frac {1}{\sqrt {2\pi \sigma ^{2}}}}e^{-{\frac {(x-\mu )^{2}}{2\sigma ^{2}}}}\,.} The parameter μ {\textstyle \mu } is the...

Mu Sigma is an American data analytics firm providing big data services, decision sciences and helping enterprises in data-driven decision making. The...

Management and Six Sigma to increase the velocity of value creation in business processes. Lean Six Sigma's predecessor, Six Sigma, originated from the...

Phi Beta Sigma Fraternity, Inc. (ΦΒΣ) is a historically African American fraternity. It was founded at Howard University in Washington, D.C., on January...

Sigma 6 may refer to: G.I. Joe: Sigma 6, a line of military-themed action figures and toys SDS Sigma 6, one of the SDS Sigma series of computers made by...

Sigma Phi Sigma (ΣΦΣ) is an American professional and service coed fraternity for college students studying to be funeral service practitioners. Sigma...

Sigma Corporation (株式会社シグマ, Kabushiki-gaisha Shiguma) is a Japanese company, manufacturing cameras, lenses, flashes and other photographic accessories...

The Sigma is an experimental glider developed in Britain from 1966 by a team led by Nicholas Goodhart. After disappointing performance during flight testing...