Temat: Mean Square Error - Prolib Integro

Skocz do pozycji: 1.

Tytuł:: Estimating population coefficient of variation using a single auxiliary variable in simple random sampling
Autorzy:: Singh, Rajesh
Mishra, Madhulika
Tematy:: coefficient of variation
simple random sampling
auxiliary variable
mean square error; Pokaż więcej
Wydawca:: Główny Urząd Statystyczny
Powiązania:: https://bibliotekanauki.pl/articles/1186918.pdf Link otwiera się w nowym oknie
Opis:: This paper proposes an improved estimation method for the population coefficient of variation, which uses information on a single auxiliary variable. The authors derived the expressions for the mean squared error of the proposed estimators up to the first order of approximation. It was demonstrated that the estimators proposed by the authors are more efficient than the existing ones. The results of the study were validated by both empirical and simulation studies.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 2.

Tytuł:: Ratio estimation of two population means in two-phase stratified random sampling under a scrambled response situation
Autorzy:: Das, Pitambar
Singh, Garib Nath
Bandyopadhyay, Arnab
Tematy:: stratified random sampling
scrambled response
auxiliary variable
mean square error
simulation study; Pokaż więcej
Wydawca:: Główny Urząd Statystyczny
Powiązania:: https://bibliotekanauki.pl/articles/31342165.pdf Link otwiera się w nowym oknie
Opis:: In this paper, we have described the development of an effective two-phase stratified random sampling estimation procedure in a scrambled response situation. Two different exponential, regression-type estimators were formed separately for different structures of two-phase stratified sampling schemes. We have studied the properties of the suggested strategy. The performance of the proposed strategy has been demonstrated through numerical evidence based on a data set of a natural population and a population generated through simulation studies. Taking into consideration the encouraging findings, suitable recommendations for survey statisticians are prepared for the application of the proposed strategy in real-life conditions.
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
Tematy:: ratio-to-regression estimator
auxiliary variable
successive sampling
bias
mean square error
optimum replacement policy; Pokaż więcej
Wydawca:: Główny Urząd Statystyczny
Powiązania:: https://bibliotekanauki.pl/articles/973550.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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