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Pier Francesco Perri

Author's books

Alcune considerazioni sull’efficienza degli stimatori rapporto-cum-prodotto digital
format: Article | STATISTICA & APPLICAZIONI - 2004 - 2
Year: 2004
In order to estimate the unknown mean of a study variable using two auxiliary variables, the efficiency of a modified version of the ratio-cum-product estimators is analysed when the sampling fraction is less then 0.5.
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