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Contribuciones al muestreo sucesivo: estimador producto multivariante

Authors: Artés Rodríguez, Eva M.;

Contribuciones al muestreo sucesivo: estimador producto multivariante

Abstract

Se considera el problema de estimar la media de una población finita para la ocasión actual, basándonos en las muestras seleccionadas en dos ocasiones. Se construye un estimador producto multivariante de doble muestreo para la parte solapada de la muestra, para el caso en que dos variables auxiliares se encuentran correlacionadas deforma negativa con la variable objeto de estudio. Se obtienen las expresiones para el estimador óptimo y su varianza. Se calcula la curva que nos proporciona la ganancia en eficiencia del estimador combinado sobre el estimador directo que no utiliza la información obtenida en la primera ocasión. Se obtienen las condiciones bajo las cuales nuestro estimador mejora en precisión al estimador combinado de producto univariante. Finalmente, se incluye un estudio empírico para analizar el buen funcionamiento del método propuesto.

Country
Spain
Keywords

sample surveys, Estimador producto bivariante, Classificació AMS::62 Statistics::62D05 Sampling theory, sample surveys, Classificació AMS::62 Statistics::62D05 Sampling theory, Ganancia en eficiencia, Statistics, Muestreo en ocasiones sucesivas, Fracción de solapamiento, Mostreig (Estadística), :62 Statistics::62D05 Sampling theory, sample surveys [Classificació AMS]

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selected citations
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This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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