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Ratio-cum-product Type Estimators for Rare and Hidden Clustered Population.
Singh, Rajesh; Mishra, Rohan.
  • Singh R; Institute of Science, Department of Statistics, Banaras Hindu University, Varanasi, India.
  • Mishra R; Institute of Science, Department of Statistics, Banaras Hindu University, Varanasi, India.
Sankhya B (2008) ; 85(1): 33-53, 2023.
Article in English | MEDLINE | ID: covidwho-2303867
ABSTRACT
The use of multi-auxiliary variables helps in increasing the precision of the estimators, especially when the population is rare and hidden clustered. In this article, four ratio-cum-product type estimators have been proposed using two auxiliary variables under adaptive cluster sampling (ACS) design. The expressions of the mean square error (MSE) of the proposed ratio-cum-product type estimators have been derived up to the first order of approximation and presented along with their efficiency conditions with respect to the estimators presented in this article. The efficiency of the proposed estimators over similar existing estimators have been assessed on four different populations two of which are of the daily spread of COVID-19 cases. The proposed estimators performed better than the estimators presented in this article on all four populations indicating their wide applicability and precision.
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Full text: Available Collection: International databases Database: MEDLINE Language: English Journal: Sankhya B (2008) Year: 2023 Document Type: Article Affiliation country: S13571-022-00298-x

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Full text: Available Collection: International databases Database: MEDLINE Language: English Journal: Sankhya B (2008) Year: 2023 Document Type: Article Affiliation country: S13571-022-00298-x