Results 1 to 10 of about 71,732 (244)
Improved exponential type ratio estimator in double sampling for stratification [PDF]
Scientific Reports, 2023 The objective of this research is to create a chain-ratio-type exponential estimator in order to estimate the finite population mean in double sampling for stratification.
Anurag Gupta, Rajesh Tailor, Nitu Barod
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The chain ratio estimator and regression estimator with linear combination of two auxiliary variables. [PDF]
PLoS ONE, 2013 In sample surveys, it is usual to make use of auxiliary information to increase the precision of the estimators. We propose a new chain ratio estimator and regression estimator of a finite population mean using linear combination of two auxiliary ...
Jingli Lu
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Featurized Density Ratio Estimation
CoRR, 2021 First two authors contributed ...
Kristy Choi +2 more
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WSEAS TRANSACTIONS ON MATHEMATICS, 2020 Confidence intervals for ratio of means for large paired and unpaired samples with finite variance,obtained by applying the central limit theorem and Cramér-Wold device, are given. Also, these intervals for ratiosare obtained under infinite variance and when considering independent populations, by using stable distributions.Numerical illustrations by ...
Omey, Edward, Cadena, Meitner
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Estimation of a Ratio in the Finite Population [PDF]
Informatica, 2005 Summary: Estimation of the ratio of two totals is considered, when a probability sample from the finite population is available. Four estimators of the ratio are examined. The first one -- called ``simple'' -- is the ratio of the Horvitz-Thompson estimators of totals; the second -- the ratio of two ratio estimators of totals; the third one -- the ratio
Danute Krapavickaite +1 more
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A new Separated Ratio Estimator in the stratified random sampling [PDF]
المجلة العراقية للعلوم الاحصائية, 2009 The aim of this research is to find a new separated ratio estimator in the stratified random sampling ,three other estimators are compared with the new separated ratio estimator , namely : ordinary separated ratio estimator , combined ratio estimator ...
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Ratio-cum-product type exponential estimator
Statistica, 2013 This paper addresses the problem of estimating the population mean of the study variate Y using information on two auxiliary variables X1 and X2 . A ratio-cum-product type exponential estimator has been suggested and its bias and mean squared error have ...
Housila P. Singh +2 more
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Predictive Estimation of Population Mean in Ranked Set Sampling
Revstat Statistical Journal, 2019 The article presents predictive estimation of population mean of the study variable in Ranked Set Sampling (RSS). It is shown that the predictive estimators in RSS using mean per unit estimator, ratio estimator and regression estimator as predictor for ...
Shakeel Ahmed +2 more
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A new estimator for population total in the presence of missing data under unequal probability sampling without replacement: A case study on fine particulate matter in Northern Thailand [PDF]
Songklanakarin Journal of Science and Technology (SJST), 2023 The issue of fine particulate matter in Thailand, especially in Northern Thailand, is an urgent problem that needs to be solved because of potential harm to human health. Prior estimates of fine particulate matter help planning how to reduce it.
Chugiat Ponkaew, Nuanpan Lawson
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Generalized ratio-cum-product type exponential estimation of the population mean in median ranked set sampling [PDF]
المجلة العراقية للعلوم الاحصائية, 2022 This study presents a proposal to estimate the finite population's mean of the main variable by median ranked set sampling through the generalized ratio-cum-product type exponential estimator.
Rikan .AL_Rahman, Saja Mohammad
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