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  2. Ordinary least squares - Wikipedia

    en.wikipedia.org/wiki/Ordinary_least_squares

    In statistics, ordinary least squares (OLS) is a type of linear least squares method for choosing the unknown parameters in a linear regression model (with fixed level-one [clarification needed] effects of a linear function of a set of explanatory variables) by the principle of least squares: minimizing the sum of the squares of the differences between the observed dependent variable (values ...

  3. Proofs involving ordinary least squares - Wikipedia

    en.wikipedia.org/wiki/Proofs_involving_ordinary...

    The normal equations can be derived directly from a matrix representation of the problem as follows. The objective is to minimize = ‖ ‖ = () = +.Here () = has the dimension 1x1 (the number of columns of ), so it is a scalar and equal to its own transpose, hence = and the quantity to minimize becomes

  4. AOL Mail

    mail.aol.com

    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!

  5. Ohio Virtual Academy - Wikipedia

    en.wikipedia.org/wiki/Ohio_Virtual_Academy

    The Ohio Virtual Academy (OHVA) is one of many virtual charter schools that is powered by the curriculum provider Stride Inc. The academy, like most Stride-supplied schools, provides the student with textbooks, materials, and a loaned computer, so the student can access their online lessons.

  6. Rosetta Stone (software) - Wikipedia

    en.wikipedia.org/wiki/Rosetta_Stone_(software)

    Rosetta Stone Language Learning is proprietary, computer-assisted language learning (CALL) software published by Rosetta Stone Inc, part of the IXL Learning family of products. [citation needed] The software uses images, text, and sound to teach words and grammar by spaced repetition, without translation. Rosetta Stone calls its approach ...

  7. IXL - Wikipedia

    en.wikipedia.org/wiki/IXL

    IXL may refer to: IXL, Oklahoma, a town in the USA; IXL Historical Museum, a historic building in Hermansville, Michigan, and IXL, a brand of flooring; Henry Jones IXL, an Australian manufacturer of jams and other foods, and IXL, a brand name; Kushok Bakula Rimpochee Airport (IATA: IXL), in Leh, Ladakh, India; A railway interlocking

  8. Constrained least squares - Wikipedia

    en.wikipedia.org/wiki/Constrained_least_squares

    In constrained least squares one solves a linear least squares problem with an additional constraint on the solution. [1] [2] This means, the unconstrained equation = must be fit as closely as possible (in the least squares sense) while ensuring that some other property of is maintained.

  9. Microsoft Excel - Wikipedia

    en.wikipedia.org/wiki/Microsoft_Excel

    Microsoft Excel is a spreadsheet editor developed by Microsoft for Windows, macOS, Android, iOS and iPadOS.It features calculation or computation capabilities, graphing tools, pivot tables, and a macro programming language called Visual Basic for Applications (VBA).

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