One of the most useful indicators of relative dispersion is the coefficient of variation. The
characteristics of the coefficient of variation have contributed to its widespread use in most …

In this article, our main aim is to suggest enhanced families of estimators for estimating the
population distribution function (DF) using twofold auxiliary evidence within the framework of …

This paper addresses some classes of combined and separate imputation methods (CSIMs)
of the population mean under stratified simple random sampling (SSRS) along with their …

In survey research, the issue of measurement errors (ME) has been sorted out by various
authors, but the issue of correlated measurement errors (CME) has only been studied by …

The objective of this study is to construct a new distribution known as the weighted Burr–
Hatke distribution (WBHD). The PDF and CDF of the WBHD are derived in a closed form …

This article suggests some novel logarithmic predictive estimators using ranked set
sampling for the computation of population mean. The bias and mean square error of the …

In this article, a new robust ratio type estimator using the Uk's redescending M-estimator is
proposed for the estimation of the finite population mean in the simple random sampling …

Cox's proportional hazards model (PH) is an acceptable model for survival data analysis.
This work investigates PH models' performance under different efficient sampling schemes …

Many fields require the development of different techniques and approaches to improve the
precision and efficiency of population parameters estimation. To reflect the impact of …

In the context of sample surveys, this article presents factor-type exponential ratio estimators
as a technique for estimating population means. These estimators use supplementary …