Results 41 to 50 of about 341 (76)

Método de exploración secuencial cuasi equilibrado en muestreo en poblaciones finitas [PDF]

open access: yes, 1994
En este trabajo se propone un procedimiento de muestreo de tipo secuencial que proporciona probabilidades de inclusión de primer orden proporcionales al tamaño, sobre bloques de la población, siendo las de segundo orden nulas para pares de elementos ...
Fernández García, Francisco Ramón   +1 more
core  

A sieve M-theorem for bundled parameters in semiparametric models, with application to the efficient estimation in a linear model for censored data

open access: yes, 2012
In many semiparametric models that are parameterized by two types of parameters---a Euclidean parameter of interest and an infinite-dimensional nuisance parameter---the two parameters are bundled together, that is, the nuisance parameter is an unknown ...
Ding, Ying, Nan, Bin
core   +1 more source

INDIRECT SAMPLING in the CONTEXT of DUAL FRAME SURVEYS [PDF]

open access: yes
Under-coverage is one of the most common problems of sampling frames. To reduce the impact of coverage error on survey estimates several frames can be combined in order to achieve a complete (or nearly complete) coverage of the target population ...
Manuela Maia, Paula Vicente
core  

Field rules and bias in random surveys with quota samples. An assessment of CIS surveys [PDF]

open access: yes, 2018
Surveys applying quota sampling in their final step are widely used in opinion and market research all over the world. This is also the case in Spain, where the surveys carried out by CIS (a public institution for sociological research supported by the ...
Aybar, Cristina, Pavía, José M.
core  

Parametric bootstrap approximation to the distribution of EBLUP and related prediction intervals in linear mixed models

open access: yes, 2008
Empirical best linear unbiased prediction (EBLUP) method uses a linear mixed model in combining information from different sources of information. This method is particularly useful in small area problems.
Chatterjee, Snigdhansu   +2 more
core   +3 more sources

Disseny i construcció d'una mostra estratificada a partir de dades censals [PDF]

open access: yes, 2000
L'objectiu de l'article és presentar les principals característiques del disseny i del procés de construcció de la mostra estratificada de l'"Enquesta metropolitana de Barcelona. Condicions de vida i hàbits de la població" de l'edició de l'any 1995.
Dominguez Amoros, Màrius   +2 more
core   +1 more source

Finite sample properties of multiple imputation estimators

open access: yes, 2004
Finite sample properties of multiple imputation estimators under the linear regression model are studied. The exact bias of the multiple imputation variance estimator is presented. A method of reducing the bias is presented and simulation is used to make
Kim, Jae Kwang
core   +1 more source

On the two-phase framework for joint model and design-based inference

open access: yes, 2006
We establish a mathematical framework that formally validates the two-phase ``super-population viewpoint'' proposed by Hartley and Sielken [Biometrics 31 (1975) 411--422] by defining a product probability space which includes both the design space and ...
Kratina, Ioana Schiopu   +1 more
core   +1 more source

A novel proposed class of estimators under ranked set sampling: Simulation and diverse applications. [PDF]

open access: yesHeliyon, 2023
Yusuf M   +4 more
europepmc   +1 more source

Affinely invariant matching methods with discriminant mixtures of proportional ellipsoidally symmetric distributions

open access: yes, 2006
In observational studies designed to estimate the effects of interventions or exposures, such as cigarette smoking, it is desirable to try to control background differences between the treated group (e.g., current smokers) and the control group (e.g ...
Rubin, Donald B., Stuart, Elizabeth A.
core   +1 more source

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