Temat: Ratio estimator - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Improved Separate Ratio Exponential Estimator for Population Mean Using Auxiliary Information
Autorzy:: Yadav, Rochini
Upadhyaya, Lakshmi N.
Singh, Housila P.
Chatterjee, S.
Powiązania:: https://bibliotekanauki.pl/articles/465985.pdf
Data publikacji:: 2011
Wydawca:: Główny Urząd Statystyczny
Tematy:: Study variable
auxiliary variable
stratified random sampling
separate ratio estimator
separate product estimator
bias and mean squared error
Opis:: This paper advocates the improved separate ratio exponential estimator for population mean of the study variable y using the information based on auxiliary variable x in stratified random sampling. The bias and mean squared error (MSE) of the suggested estimator have been obtained upto the first degree of approximation. The theoretical and numerical comparisons are carried out to show the efficiency of the suggested estimator over sample mean estimator, usual separate ratio and separate product estimator.
Źródło:: Statistics in Transition new series; 2011, 12, 2; 401-412
1234-7655
Pojawia się w:: Statistics in Transition new series
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Estimation of finite population mean using two auxiliary variables under stratified random sampling
Autorzy:: Yadav, Rohini
Tailor, Rajesh
Powiązania:: https://bibliotekanauki.pl/articles/1358426.pdf
Data publikacji:: 2020-03-23
Wydawca:: Główny Urząd Statystyczny
Tematy:: Study variable
auxiliary variable
stratified random sampling
dual to ratio estimator
bias and mean squared error
Opis:: This paper addresses the problem of an alternative approach to estimating the population mean of the study variable with the help of the auxiliary variable under stratified random sampling. The properties of the suggested estimator have been studied under large sample approximation. It has been demonstrated that the suggested estimator is more efficient than other considered estimators. To judge the merits of the proposed estimator, an empirical study has been carried out to support the present study.
Źródło:: Statistics in Transition new series; 2020, 21, 1; 1-12
1234-7655
Pojawia się w:: Statistics in Transition new series
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Sampling Designs Proportionate to Sum of Two Order Statistics of Auxiliary Variable
Autorzy:: Wywiał, Janusz L.
Powiązania:: https://bibliotekanauki.pl/articles/465790.pdf
Data publikacji:: 2013
Wydawca:: Główny Urząd Statystyczny
Tematy:: sampling design
order statistic
sample quantile
auxiliary variable
Horvitz-Thompson statistic
inclusion probabilities
sampling scheme
ratio estimator
Opis:: In this paper the case of a conditional sampling design proportional to the sum of two order statistics is considered. Several strategies including the Horvitz-Thompson estimator and ratio-type estimators are discussed. The accuracy of these estimators is analyzed on the basis of computer simulation experiments.
Źródło:: Statistics in Transition new series; 2013, 14, 2; 231-248
1234-7655
Pojawia się w:: Statistics in Transition new series
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Estimation of Mean on The Basis of Conditional Simple Random Sample
Autorzy:: Wywiał, Janusz L.
Powiązania:: https://bibliotekanauki.pl/articles/466050.pdf
Data publikacji:: 2016
Wydawca:: Główny Urząd Statystyczny
Tematy:: conditional sampling design
order statistic
concomitant
sample quantile
auxiliary variable
Horvitz-Thompson statistic
inclusion probabilities
sampling scheme
ratio estimator
Opis:: Estimation of the population mean in a finite and fixed population on the basis of the conditional simple random sampling design dependent on order statistics (quantiles) of an auxiliary variable is considered. Properties of the well-known Horvitz-Thompson and ratio type estimators as well as the sample mean are taken into account under the conditional simple random sampling designs. The considered examples of empirical analysis lead to the conclusion that under some additional conditions the proposed estimation strategies based on the conditional simple random sample are usually more accurate than the mean from the simple random sample drawn without replacement.
Źródło:: Statistics in Transition new series; 2016, 17, 3; 411-428
1234-7655
Pojawia się w:: Statistics in Transition new series
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

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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