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   Articles with "stratified random" as a keyword



Comparison of sampling effort allocation strategies in a stratified random survey with multiple objectives

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recommendations! Published in 2020 at "Aquaculture and Fisheries"

DOI: 10.1016/j.aaf.2020.02.002

Abstract: Abstract Stratified random survey is commonly used to estimate abundance indices of fish populations in multispecies survey, providing reliable data for stock assessment and fisheries management. In some cases, however, the sample size is relatively… read more here.

Keywords: random survey; abundance indices; survey; stratified random ... See more keywords

Evaluation of alternative stratifications for a stratified random fishery-independent survey

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recommendations! Published in 2018 at "Fisheries Research"

DOI: 10.1016/j.fishres.2018.06.019

Abstract: Abstract Stratified random sampling (StRS) can lead to improved precision and accuracy in estimating key fisheries population parameters, particularly when the spatial distributions of target fish populations have high heterogeneity among different strata and homogeneities… read more here.

Keywords: fishery independent; survey; stratified random; fish populations ... See more keywords

Efficient separate class of estimators of population mean in stratified random sampling

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recommendations! Published in 2017 at "Communications in Statistics - Theory and Methods"

DOI: 10.1080/03610926.2014.999094

Abstract: ABSTRACT In this paper, efficient class of estimators for population mean using two auxiliary variates is suggested. It has been shown that the suggested estimator is more efficient than usual unbiased estimator in stratified random… read more here.

Keywords: suggested estimator; estimators population; estimator; stratified random ... See more keywords

A simulation study: Using dual ancillary variable to estimate population mean under stratified random sampling

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recommendations! Published in 2022 at "PLOS ONE"

DOI: 10.1371/journal.pone.0275875

Abstract: In this paper, we propose an improved ratio-in-regression type estimator for the finite population mean under stratified random sampling, by using the ancillary varaible as well as rank of the ancillary varaible. Expressions of the… read more here.

Keywords: random sampling; ancillary variable; population mean; stratified random ... See more keywords

Estimation for Two Sensitive Variables Using Randomization Response Model Under Stratified Random Sampling

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recommendations! Published in 2025 at "Mathematics"

DOI: 10.3390/math13020297

Abstract: When direct survey are about sensitive characteristics such as addiction to drugs, alcoholism, proneness to tax invasion and sexual violence, nonresponse bias and response bias become serious problems because people oftentimes do not wish to… read more here.

Keywords: stratified random; response; random sampling; population ... See more keywords

Optimizing Variance Estimation in Stratified Random Sampling through a Log-Type Estimator for Finite Populations

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recommendations! Published in 2024 at "Symmetry"

DOI: 10.3390/sym16050540

Abstract: In this research, a logarithmic-type estimator was formulated for estimating the finite population variance in stratified random sampling. By ensuring that the sampling process is symmetrically conducted across the population, biases can be minimized, and… read more here.

Keywords: stratified random; variance; type estimator; random sampling ... See more keywords