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Efficient Estimation of Population Mean of a Sensitive Variable Under ORRT Models Using Two-Phase Sampling

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The proposed estimator shows improved accuracy in estimating the population mean of sensitive variables.
Simulation results indicate that the proposed family of estimators consistently outperforms alternatives in various conditions.
The bias and mean squared error of the estimators were derived, ensuring robustness in their application.
Utilizing two-phase sampling, the method effectively addresses issues of non-response and measurement error.

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The study demonstrates properties of estimators for sensitive variables under non-response and measurement error.

Kumar et al. (2025) studied this question.

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