Temat: Ratio estimator - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Some classes of modified ratio type estimators in sample surveys
Autorzy:: Swain, A. K. P. C.
Das, Manjula
Powiązania:: https://bibliotekanauki.pl/articles/466061.pdf
Data publikacji:: 2015
Wydawca:: Główny Urząd Statystyczny
Tematy:: ratio type estimator
simple random sampling
bias
mean square error
efficiency
Opis:: In this paper some classes of modified ratio type estimators with additive and multiplicative adjustments made to the simple mean per unit estimator and classical ratio estimator are suggested to obtain more efficient ratio type estimators compared to the classical one. Their biases and mean square errors are obtained and compared with first order approximations.
Źródło:: Statistics in Transition new series; 2015, 16, 1; 37-52
1234-7655
Pojawia się w:: Statistics in Transition new series
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Chain Ratio Estimator for the Population Mean in the Presence of Non-Response
Autorzy:: Khare, B. B.
Srivastava, U.
Kumar, K.
Powiązania:: https://bibliotekanauki.pl/articles/465661.pdf
Data publikacji:: 2012
Wydawca:: Główny Urząd Statystyczny
Tematy:: chain ratio type estimator
preliminary sample
bias
mean square error
non-response
additional auxiliary variable
Opis:: In this paper we have proposed two chain ratio type estimators for population mean using two auxiliary variables in the presence of non-response. The proposed estimators have been found to be more efficient than the relevant estimators for the fixed values of preliminary sample of size n′and subsample of size n(
Źródło:: Statistics in Transition new series; 2012, 13, 3; 495-518
1234-7655
Pojawia się w:: Statistics in Transition new series
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Ratio-To-Regression Estimator In Successive Sampling Using One Auxiliary Variable
Autorzy:: Ralte, Zoramthanga
Das, Gitasree
Powiązania:: https://bibliotekanauki.pl/articles/973550.pdf
Data publikacji:: 2015
Wydawca:: Główny Urząd Statystyczny
Tematy:: ratio-to-regression estimator
auxiliary variable
successive sampling
bias
mean square error
optimum replacement policy
Opis:: The problem of estimation of finite population mean on the current occasion based on the samples selected over two occasions has been considered. In this paper, first a chain ratio-to-regression estimator was proposed to estimate the population mean on the current occasion in two-occasion successive (rotation) sampling using only the matched part and one auxiliary variable, which is available in both the occasions. The bias and mean square error of the proposed estimator is obtained. We proposed another estimator, which is a linear combination of the means of the matched and unmatched portion of the sample on the second occasion. The bias and mean square error of this combined estimator is also obtained. The optimum mean square error of this combined estimator was compared with (i) the optimum mean square error of the estimator proposed by Singh (2005) (ii) mean per unit estimator and (iii) combined estimator suggested by Cochran (1977) when no auxiliary information is used on any occasion. Comparisons are made both analytically as well as empirically by using real life data.
Źródło:: Statistics in Transition new series; 2015, 16, 2; 183-202
1234-7655
Pojawia się w:: Statistics in Transition new series
Dostawca treści:: Biblioteka Nauki

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