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Estimating the population mean in the case of missing data using simple random sampling
Authors:Carlos N Bouza  Amer Ibrahim Al-Omari
Institution:1. Matematica Aplicada , Universidad de La Habana , San Lazaro y L, La Habana , 10400 , Cuba bouza@matcom.uh.cu;3. Department of Mathematics, Faculty of Science , Al al-Bayt University , Mafraq , Jordan
Abstract:In this paper, we suggest three new ratio estimators of the population mean using quartiles of the auxiliary variable when there are missing data from the sample units. The suggested estimators are investigated under the simple random sampling method. We obtain the mean square errors equations for these estimators. The suggested estimators are compared with the sample mean and ratio estimators in the case of missing data. Also, they are compared with estimators in Singh and Horn Compromised imputation in survey sampling, Metrika 51 (2000), pp. 267–276], Singh and Deo Imputation by power transformation, Statist. Papers 45 (2003), pp. 555–579], and Kadilar and Cingi Estimators for the population mean in the case of missing data, Commun. Stat.-Theory Methods, 37 (2008), pp. 2226–2236] and present under which conditions the proposed estimators are more efficient than other estimators. In terms of accuracy and of the coverage of the bootstrap confidence intervals, the suggested estimators performed better than other estimators.
Keywords:missing data  quartile  simple random sampling  imputation  efficiency
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