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  2. Variance - Wikipedia

    en.wikipedia.org/wiki/Variance

    If the set is a sample from the whole population, then the unbiased sample variance can be calculated as 1017.538 that is the sum of the squared deviations about the mean of the sample, divided by 11 instead of 12. A function VAR.S in Microsoft Excel gives the unbiased sample variance while VAR.P is for population variance.

  3. Covariance operator - Wikipedia

    en.wikipedia.org/wiki/Covariance_operator

    (from the Riesz representation theorem, such operator exists if Cov is bounded). Since Cov is symmetric in its arguments, the covariance operator is self-adjoint. When P is a centred Gaussian measure, C is also a nuclear operator. In particular, it is a compact operator of trace class, that is, it has finite trace.

  4. Ohm's law - Wikipedia

    en.wikipedia.org/wiki/Ohm's_law

    Ohm explained his experimental results by a slightly more complex equation than the modern form above (see § History below). In physics, the term Ohm's law is also used to refer to various generalizations of the law; for example the vector form of the law used in electromagnetics and material science:

  5. Amateur radio licensing in the United States - Wikipedia

    en.wikipedia.org/wiki/Amateur_radio_licensing_in...

    FCC amateur radio station license of Al Gross. In the United States, amateur radio licensing is governed by the Federal Communications Commission (FCC). Licenses to operate amateur stations for personal use are granted to individuals of any age once they demonstrate an understanding of both pertinent FCC regulations and knowledge of radio station operation and safety considerations.

  6. Ivana Trump - Wikipedia

    en.wikipedia.org/wiki/Ivana_Trump

    Ivana Marie Trump (née Zelníčková, Czech: [ˈzɛlɲiːtʃkovaː]; February 20, 1949 – July 14, 2022) was a Czech-American businesswoman, socialite, and model.She lived in Canada in the 1970s, before relocating to the United States and marrying Donald Trump in 1977.

  7. Template method pattern - Wikipedia

    en.wikipedia.org/wiki/Template_method_pattern

    The Template pattern provides a solution. If the generated code follows the template method pattern, the generated code will all be an abstract superclass. Provided that hand-written customizations are confined to a subclass, the code generator can be run again without risk of over-writing these modifications.

  8. Glossary of mathematical symbols - Wikipedia

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

    For the similar-looking operator named parallel, see ∥. Floor function : if x is a real number, ⌊ x ⌋ {\displaystyle \lfloor x\rfloor } is the greatest integer that is not greater than x . Ceiling function : if x is a real number, ⌈ x ⌉ {\displaystyle \lceil x\rceil } is the lowest integer that is not lesser than x .

  9. AOL Mail

    mail.aol.com/?icid=aol.com-nav

    Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!