Memory type ratio and product estimators under ranked-based sampling schemes

Irfan Aslam, Muhammad Noor-ul-Amin, Muhammad Hanif and Prayas Sharma

Communications in Statistics - Theory and Methods, 2023, vol. 52, issue 4, 1155-1177

Abstract: The exponential weighted moving average (EWMA) statistic is utilized the past information along with the present to enhance the efficiency of the estimators used for estimating the population parameters. In this study, the EWMA statistic is used for the estimation of population mean with suitable auxiliary information. The memory type ratio and product estimators are proposed under ranked-based sampling (RBS) schemes including extreme ranked set sampling, median ranked set sampling, and quartile ranked set sampling. The expressions of mean square errors (MSE) of the proposed estimators are derived. An extensive simulation study is conducted to evaluate the performance of the proposed estimators. An empirical study is presented based on real-life data that supports the findings of the simulation study.

Date: 2023
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DOI: 10.1080/03610926.2021.1924784

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