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  2. 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.

  3. Normal distribution - Wikipedia

    en.wikipedia.org/wiki/Normal_distribution

    3.2.1.2 Operations on two independent standard normal variables. ... This fact is known as the 68–95–99.7 (empirical) rule, or the 3-sigma rule.

  4. Standard deviation - Wikipedia

    en.wikipedia.org/wiki/Standard_deviation

    A little algebra shows that the distance between P and M (which is the same as the orthogonal distance between P and the line L) (¯) is equal to the standard deviation of the vector (x 1, x 2, x 3), multiplied by the square root of the number of dimensions of the vector (3 in this case).

  5. Search, sort, and manage files with the Download Manager in ...

    help.aol.com/articles/search-sort-and-manage...

    1. Launch AOL Desktop Gold. 2. Sign in with your username and password. 3. Click File at the top of your screen. 4. Click Download Manager. 5. Click a File Name to open a download.

  6. 3-sigma - Wikipedia

    en.wikipedia.org/?title=3-sigma&redirect=no

    This page was last edited on 24 September 2024, at 05:21 (UTC).; Text is available under the Creative Commons Attribution-ShareAlike 4.0 License; additional terms may apply.

  7. Critical three-state Potts model - Wikipedia

    en.wikipedia.org/wiki/Critical_three-state_Potts...

    The three-state Potts CFT, also known as the parafermion CFT, is a conformal field theory in two dimensions. It is a minimal model with central charge = /.It is considered to be the simplest minimal model with a non-diagonal partition function in Virasoro characters, as well as the simplest non-trivial CFT with the W-algebra as a symmetry.

  8. Sigma bond - Wikipedia

    en.wikipedia.org/wiki/Sigma_bond

    There is no more than 1 sigma bond between any two atoms. Molecules with rings have additional sigma bonds, such as benzene rings, which have 6 C−C sigma bonds within the ring for 6 carbon atoms. The anthracene molecule, C 14 H 10, has three rings so that the rule gives the number of sigma bonds as 24 + 31 = 26. In this case there are 16 ...

  9. Unified strength theory - Wikipedia

    en.wikipedia.org/wiki/Unified_strength_theory

    The limit surfaces of the unified strength theory in principal stress space are usually a semi-infinite dodecahedron cone with unequal sides. The shape and size of the limiting dodecahedron cone depends on the parameter b and .