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Técnicas Robustas y No Robustas para Identificar Outliers en el Análisis de Regresión

Author

Listed:
  • Darwin Ugarte Ontiveros

    (Universidad Privada Boliviana)

  • Ruth Marcela Aparicio de Guzmán

    (Universidad Privada Boliviana)

Abstract

Verificar si los resultados de un modelo de regresión reflejan el patrón de los datos, o si los mismos se deben a unas cuantas observaciones atípicas (outliers) es un paso importante en el proceso de investigación empírica. Para este propósito resulta aún común apoyarse en procedimientos (estándares) que no son eficaces para este propósito, al sufrir del denominado "masking effect", algunos de ellos sugeridos incluso en los libros tradicionales de econometría. El presente trabajo pretende alertar a la comunidad académica sobre el peligro de implementar estas técnicas estándares, mostrando el pésimo desempeño de las mismas. Asimismo, se sugiere aplicar otras técnicas más idóneas sugeridas en la literatura sobre "estadística robusta" para identificar outliers en el análisis multivariado. Para facilitar la aplicación de las mismas, el trabajo pone a disposición de la comunidad académica un programa en Stata del tipo do-file para identificar y categorizar outliers basado en el trabajo de [1]. Simulaciones de Monte Carlo dan evidencia de la aplicabilidad de la misma.

Suggested Citation

  • Darwin Ugarte Ontiveros & Ruth Marcela Aparicio de Guzmán, 2020. "Técnicas Robustas y No Robustas para Identificar Outliers en el Análisis de Regresión," Investigación & Desarrollo, Universidad Privada Boliviana, vol. 20(1), pages 41-56.
    • Handle: RePEc:iad:wpaper:0320
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    References listed on IDEAS

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    More about this item

    Keywords

    Outliers; Estadística Robusta; Análisis de Regresión; Stata.;
    All these keywords.

    JEL classification:

    • B23 - Schools of Economic Thought and Methodology - - History of Economic Thought since 1925 - - - Econometrics; Quantitative and Mathematical Studies

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