Published

2013-01-01

Improved Exponential Type Ratio Estimator of Population Variance

Estimador tipo razón exponencial mejorado para la varianza poblacional

Keywords:

Auxiliary variable, Bias, Efficiency, Mean squared error (en)
Eficiencia, error cuadrático medio, sesgo, variable auxiliar. (es)

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Authors

  • Subhash Kumar Yadav Dr. Rml Avadh University
  • Cem Kadilar Hacettepe University, Ankara
This article considers the problem of estimating the population variance using auxiliary information. An improved version of Singh’s exponential type ratio estimator has been proposed and its properties have been studied under large sample approximation. It is shown that the proposed exponential type ratio estimator is more efficient than that considered by the Singh estimator, conventional ratio estimator and the usual unbiased estimator under some realistic conditions. An empirical study has been carried out to judge the merits of the suggested estimator over others.

Este artículo considera el problema de estimar la varianza poblacional usando información auxiliar. Una versión mejorada de un estimador exponencial tipo razón de Singh ha sido propuesta y sus propiedades han sido estudiadas bajo aproximaciones de grandes muestras. Se muestra que el estimador exponencial tipo razón propuesto es más eficiente que el estimador de Singh, el estimador de razón convencional y el estimador insesgado usual bajo algunas condiciones realísticas. Un estudio empírico se ha llevado a cabo con el fin de juzgar los méritos del estimador sugerido sobre otros disponibles.

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References

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