Results 11 to 20 of about 694,437 (287)

On the Use of Gradient Boosting Methods to Improve the Estimation with Data Obtained with Self-Selection Procedures

open access: yesMathematics, 2021
In the last years, web surveys have established themselves as one of the main methods in empirical research. However, the effect of coverage and selection bias in such surveys has undercut their utility for statistical inference in finite populations. To
Luis Castro-Martín   +3 more
doaj   +1 more source

Adaptive normalization for IPW estimation

open access: yesJournal of Causal Inference, 2023
Inverse probability weighting (IPW) is a general tool in survey sampling and causal inference, used in both Horvitz–Thompson estimators, which normalize by the sample size, and Hájek/self-normalized estimators, which normalize by the sum of the inverse ...
Khan Samir, Ugander Johan
doaj   +1 more source

Methods to Counter Self-Selection Bias in Estimations of the Distribution Function and Quantiles

open access: yesMathematics, 2022
Many surveys are performed using non-probability methods such as web surveys, social networks surveys, or opt-in panels. The estimates made from these data sources are usually biased and must be adjusted to make them representative of the target ...
María del Mar Rueda   +2 more
doaj   +1 more source

A Bootstrap Method for a Multiple-Imputation Variance Estimator in Survey Sampling

open access: yesStats, 2022
Rubin’s variance estimator of the multiple imputation estimator for a domain mean is not asymptotically unbiased. Kim et al. derived the closed-form bias for Rubin’s variance estimator.
Lili Yu, Yichuan Zhao
doaj   +1 more source

Hyperadmissibility in Survey Sampling

open access: yesThe Annals of Statistics, 1974
Two different definitions of hyperadmissibility are considered. The relation between hyperadmissibility and admissibility is discussed. Special attention is given to the hyperadmissibility of the Horvitz-Thompson estimator.
Lanke, Jan, Ramakrishnan, M. K.
openaire   +2 more sources

Myanmar Household Welfare Survey (MHWS), Round 3

open access: yes, 2022
The third round of the Myanmar Household Welfare Survey (MHWS)–a nationwide phone panel consisting of 12,128 households–was implemented between July 2022 and August 2022.
International Food Policy Research Institute (IFPRI)
core   +1 more source

A Novel Sub-Type Mean Estimator for Ranked Set Sampling with Dual Auxiliary Variables

open access: yesJournal of New Theory, 2023
This research introduces a novel sub-estimator designed to estimate the population mean under ranked set sampling, motivated by the new concept of a recently introduced sub-ratio estimator.
Eda Gizem Koçyiğit
doaj   +1 more source

Myanmar Household Welfare Survey (MHWS), Round 4

open access: yes, 2022
The fourth round of the Myanmar Household Welfare Survey (MHWS)–a nationwide phone panel consisting of 12,924 households–was implemented between October 12, 2022 and December 30, 2022.
International Food Policy Research Institute (IFPRI)
core   +1 more source

A statistical small-area method of estimation of spatial distribution of the tree damage degree

open access: yesJournal of Forest Science, 2003
The objectives of this study are to demonstrate a small-area method of estimation of the spatial distribution of the tree damage degree, and to initially verify it during the assessment of fir (Abies alba Mill.) and beech (Fagus sylvatica L.) vitality in
R. Podlaski
doaj   +1 more source

Neutrosophic Estimators in Two-Phase Survey Sampling [PDF]

open access: yesNeutrosophic Sets and Systems, 2023
Point estimates in survey sampling only provide a single value for the parameter being studied and are consequently vulnerable to changes caused by sampling error.
Vinay Kumar Yadav, Shakti Prasad
doaj   +1 more source

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