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  2. What do teens mean when they say ‘sigma’? - AOL

    www.aol.com/news/teens-mean-sigma-210752971.html

    Sigma meaning (TODAY Illustration) Lindsay added, “So they have the ‘alpha’ which is the most successful, the best looking and then they have ‘sigma’ which is the same thing as an alpha ...

  3. Sigma - Wikipedia

    en.wikipedia.org/wiki/Sigma

    Sigma (/ ˈ s ɪ ɡ m ə / SIG-mə; ... (where mu or μ is used for the mean). [10] In topology, σ-compact topological space is one that can be written as a ...

  4. Alpha and beta male - Wikipedia

    en.wikipedia.org/wiki/Alpha_and_beta_male

    Sigma male is an internet slang term to describe solitary, masculine men. The term gained prominence within Internet culture during the late 2010s and early 2020s, and has inspired numerous memes, graffitis and videos. [32] It is used to denote a male who is equivalent to an alpha male but exists outside the alpha-beta male hierarchy as a "lone ...

  5. Greek letters used in mathematics, science, and engineering

    en.wikipedia.org/wiki/Greek_letters_used_in...

    the population mean or expected value in probability and statistics; a measure in measure theory; micro-, an SI prefix denoting 10 −6 (one millionth) Micrometre or micron (retired in 1967 as a standalone symbol, replaced by "μm" using the standard SI meaning) the coefficient of friction in physics; the service rate in queueing theory

  6. What does ‘skibidi’ mean? Kids’ top slang words of the year ...

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    Sigma – a term popularised by figures such as controversial influencer Andrew Tate – is used to describe a highly successful and independent person. The slang term is typically used to ...

  7. What does skibidi toilet mean? - AOL

    www.aol.com/does-gen-alpha-against-ohio...

    Gen Alpha have their own grasp on vocabulary that elder generations may call "sus," but they would likely consider it "sigma.". The age group is marked by those born after 2010, following Gen Z ...

  8. 68–95–99.7 rule - Wikipedia

    en.wikipedia.org/wiki/68–95–99.7_rule

    In the empirical sciences, the so-called three-sigma rule of thumb (or 3 σ rule) expresses a conventional heuristic that nearly all values are taken to lie within three standard deviations of the mean, and thus it is empirically useful to treat 99.7% probability as near certainty. [2]

  9. Glossary of mathematical symbols - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_mathematical...

    3. Between two groups, may mean that the first one is a proper subgroup of the second one. > (greater-than sign) 1. Strict inequality between two numbers; means and is read as "greater than". 2. Commonly used for denoting any strict order. 3. Between two groups, may mean that the second one is a proper subgroup of the first one. ≤ 1.