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Consideratii privind eficienta adaugării unei noi variabile explicative intr-un model de regresie liniara

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  • Pavelescu, Florin Marius

    (Institutul de Economie Nationala, Academia Romana)

Abstract

În cuprinsul prezentei lucrări sunt examinate valenţele indicatorului “coeficientul de determinare standardizat”, propus de autor, pentru cuantificarea eficienţei utilizării variabilelor explicative şi a ierarhizării condiţiilor care trebuie îndeplinite în cazul unor teste statistice prin care se cuantifică de regulă eficienţa adăugării unei noi variabile explicative în cadrul unui model de regresie liniară. De asemenea, este scos în evidenţă rolul valorilor calculate ale testului Fisher ca premisă pentru ca adăugarea unei noi variabile explicative în modelul de regresie liniară să fie eficientă.

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File URL: ftp://www.ipe.ro/RePEc/WorkingPapers/cs23_2.pdf
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Bibliographic Info

Paper provided by Institute for Economic Forecasting in its series Working Papers of Macroeconomic Modelling Seminar with number 102302.

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Length: 9 pages
Date of creation: Jun 2010
Date of revision:
Handle: RePEc:rjr:wpmems:102302

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Keywords: coeficient de determinare standardizat; creştere normalizată a coeficientului de determinare; testul Fisher; coeficient de determinare ajustat; criteriul informaţional Akaike; criteriul informaţional Schwarz; ierarhizarea criteriilor de determinare a adăugării unei noui variabile explicative în ecuaţia de regresie liniară.;

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