Temat: sampling error - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Estimation of Finite Population Mean Using Deciles of an Auxiliary Variable
Autorzy:: Subramani, J.
Kumarapandiyan, G.
Powiązania:: https://bibliotekanauki.pl/articles/466087.pdf
Data publikacji:: 2013
Wydawca:: Główny Urząd Statystyczny
Tematy:: mean squared error
natural populations
simple random sampling
Opis:: The present paper deals with a class of modified ratio estimators for estimation of population mean of the study variable when the population deciles of the auxiliary variable are known. The biases and the mean squared errors of the proposed estimators are derived and compared with that of existing modified ratio estimators for certain known populations. Further, we have also derived the conditions for which the proposed estimators perform better than the existing modified ratio estimators. From the numerical study it is also observed that the proposed modified ratio estimators perform better than the existing modified ratio estimators.
Źródło:: Statistics in Transition new series; 2013, 14, 1; 75-88
1234-7655
Pojawia się w:: Statistics in Transition new series
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: A Ratio-Cum-Product Estimator of Finite Population Mean in Systematic Sampling
Autorzy:: Tailor, Rajesh
Jatwa, Narendra K.
Singh, Housila P.
Powiązania:: https://bibliotekanauki.pl/articles/465754.pdf
Data publikacji:: 2014
Wydawca:: Główny Urząd Statystyczny
Tematy:: systematic sampling ratio-cum-product estimator
bias
mean squared error
Opis:: In this paper we consider the problem of estimation of population mean using information on two auxiliary variables in systematic sampling. We have extended Singh (1967) estimator for estimation of population mean in systematic sampling. We have derived the expressions for the bias and mean squared error of the suggested estimator up to the first degree of approximation. We have compared the suggested estimator with existing estimators and obtained the conditions under which the suggested estimator is more efficient. An empirical study has been carried out to demonstrate the performance of the suggested estimator.
Źródło:: Statistics in Transition new series; 2014, 15, 3; 391-398
1234-7655
Pojawia się w:: Statistics in Transition new series
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Optimal allocation for equal probability two-stage design
Autorzy:: Molefe, Wilford
Powiązania:: https://bibliotekanauki.pl/articles/2156993.pdf
Data publikacji:: 2022-12-15
Wydawca:: Główny Urząd Statystyczny
Tematy:: sample designs
optimal allocation
composite estimation
mean squared error
two-stage sampling
simple random sampling without replacement
Opis:: This paper develops optimal designs when it is not feasible for every cluster to be represented in a sample as in stratified design, by assuming equal probability two-stage sampling where clusters are small areas. The paper develops allocation methods for two-stage sample surveys where small-area estimates are a priority. We seek efficient allocations where the aim is to minimize the linear combination of the mean squared errors of composite small area estimators and of an estimator of the overall mean. We suggest some alternative allocations with a view to minimizing the same objective. Several alternatives, including the area-only stratified design, are found to perform nearly as well as the optimal allocation but with better practical properties. Designs are evaluated numerically using Switzerland canton data as well as Botswana administrative districts data.
Źródło:: Statistics in Transition new series; 2022, 23, 4; 129-148
1234-7655
Pojawia się w:: Statistics in Transition new series
Dostawca treści:: Biblioteka Nauki

Artykuł

Informacja