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  2. Equating coefficients - Wikipedia

    en.wikipedia.org/wiki/Equating_coefficients

    A similar problem, involving equating like terms rather than coefficients of like terms, arises if we wish to de-nest the nested radicals + to obtain an equivalent expression not involving a square root of an expression itself involving a square root, we can postulate the existence of rational parameters d, e such that

  3. Runge–Kutta–Fehlberg method - Wikipedia

    en.wikipedia.org/wiki/Runge–Kutta–Fehlberg...

    The first row of coefficients at the bottom of the table gives the fifth-order accurate method, and the second row gives the fourth-order accurate method. This shows the computational time in real time used during a 3-body simulation evolved with the Runge-Kutta-Fehlberg method.

  4. Galois theory - Wikipedia

    en.wikipedia.org/wiki/Galois_theory

    Galois' theory also gives a clear insight into questions concerning problems in compass and straightedge construction. It gives an elegant characterization of the ratios of lengths that can be constructed with this method. Using this, it becomes relatively easy to answer such classical problems of geometry as Which regular polygons are ...

  5. 108 “Are You Smarter Than A 5th Grader?” Questions ... - AOL

    www.aol.com/lifestyle/108-smarter-5th-grader...

    Hosted by comedian Jeff Foxworthy, the original show asked adult contestants to answer questions typically found in elementary school quizzes with the help of actual fifth-graders as teammates ...

  6. Error correction model - Wikipedia

    en.wikipedia.org/wiki/Error_correction_model

    Suppose in period t − 1 the system is in equilibrium, i.e. =. Suppose that in the period t, disposable income Y t {\displaystyle Y_{t}} increases by 10 and then returns to its previous level. Then C t {\displaystyle C_{t}} first (in period t) increases by 5 (half of 10), but after the second period C t {\displaystyle C_{t}} begins to decrease ...

  7. Newey–West estimator - Wikipedia

    en.wikipedia.org/wiki/Newey–West_estimator

    A Newey–West estimator is used in statistics and econometrics to provide an estimate of the covariance matrix of the parameters of a regression-type model where the standard assumptions of regression analysis do not apply. [1] It was devised by Whitney K. Newey and Kenneth D. West in 1987, although there are a number of later variants.

  8. Kuder–Richardson formulas - Wikipedia

    en.wikipedia.org/wiki/Kuder–Richardson_formulas

    [1] It is a special case of Cronbach's α, computed for dichotomous scores. [2] [3] It is often claimed that a high KR-20 coefficient (e.g., > 0.90) indicates a homogeneous test. However, like Cronbach's α, homogeneity (that is, unidimensionality) is actually an assumption, not a conclusion, of reliability coefficients.

  9. Equate - Wikipedia

    en.wikipedia.org/wiki/Equate

    Equate or equating may refer to: Equate, a brand name of Walmart; Equate (game), board game manufactured by Conceptual Math Media; Equate, a production joint venture in Kuwait between that country's government and Dow Chemical Company; Equating, statistical process of determining comparable scores on different forms of an exam