Results 1 to 10 of about 52,118 (271)

Innovative memory-type calibration estimators for better survey accuracy in stratified sampling [PDF]

open access: yesScientific Reports
Calibration methods play a vital role in improving the accuracy of parameter estimates by effectively integrating information from various data sources.
Kanwal Shafiq Minhas   +5 more
doaj   +2 more sources

Estimating Population Proportions by Means of Calibration Estimators

open access: yesRevista Colombiana de Estadística, 2015
This paper considers the problem of estimating the population proportion of a categorical variable using the calibration framework. Different situations are explored according to the level of auxiliary information available and the theoretical properties
SERGIO MARTÍNEZ   +3 more
doaj   +5 more sources

A new modified estimator of population variance in calibrated survey sampling [PDF]

open access: yesScientific Reports
In survey statistics, estimating and reducing population variation is crucial. These variations can occur in any sampling design, including stratified random sampling, where stratum weights may increase the variance of estimators. Calibration techniques,
Riffat Jabeen   +4 more
doaj   +2 more sources

Calibration estimation of population total using multi-auxiliary information in the presence of non-response [PDF]

open access: yesScientific Reports
This paper considers the problem of estimation of the population total under probability proportional to size (PPS) sampling scheme when complete data is not available due to the presence of missing observations or non-response.
Neha Garg, Anant Patel, Menakshi Pachori
doaj   +2 more sources

Calibration-Based Mean Estimators under Stratified Median Ranked Set Sampling

open access: yesMathematics, 2023
Using auxiliary information, the calibration approach modifies the original design weights to enhance the mean estimates. This paper initially proposes two families of estimators based on an adaptation of the estimators presented by recent researchers ...
Usman Shahzad   +4 more
doaj   +1 more source

Calibration as estimation [PDF]

open access: yesEconometric Reviews, 1990
Calibration in macroeconomics involves choosing fre parameters by matching certain moments of simulted models with those of data. We formally examine this method by treating the process of calibration as an econometric estimator. A numerical version of the Mehra-Prescott (1985) economy is the setting for an evaluation of calibration estimators via ...
Allan W. Gregory, Gregor W. Smith
openaire   +1 more source

Two models for linear comparative calibration [PDF]

open access: yesInternational Journal of Metrology and Quality Engineering, 2012
We consider the comparative calibration problem in the case when linear relationship is assumed between two considered measuring devices with possibly different units and precisions.
Wimmer G., Witkovský V.
doaj   +1 more source

Estimating Expected Calibration Errors [PDF]

open access: yes, 2021
12 pages, 2 figures ...
Posocco, Nicolas, Bonnefoy, Antoine
openaire   +2 more sources

A comparison of biomarker based incidence estimators. [PDF]

open access: yesPLoS ONE, 2009
BACKGROUND: Cross-sectional surveys utilizing biomarkers that test for recent infection provide a convenient and cost effective way to estimate HIV incidence. In particular, the BED assay has been developed for this purpose.
Thomas A McWalter, Alex Welte
doaj   +1 more source

Estimation of Coefficient of Variation Using Calibrated Estimators in Double Stratified Random Sampling

open access: yesMathematics, 2023
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 scientific and academic disciplines, with real life applications.
Usman Shahzad   +5 more
doaj   +1 more source

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