[PDF] Top 20 Review of some ratio estimators in stratified random sampling

... [5] Koyuncu, N.,. Tabakalı Rasgele Örneklemede Yardımcı Değişken Bilgisi Kullanılarak Kitle Ortalaması ve Varyansının Tahmin Edilmesi, Hacettepe Üniversitesi Fen Bilimleri Enstitüsü Yüksek Lisans Tezi, Ankara, (2007). ... See full document

... Auxiliary variables have been used to increase precision of estimators especially in regression and ratio estimators [2]. This is particularly so in cases of complex surveys, more so in situations ... See full document

... the stratified random sampling using the information of an auxiliary variable x which is correlated with y and suggested improved exponential ratio estimators in the stratified ... See full document

... suggested estimators using some known population parameters of an auxiliary ...of estimators in simple random ...in stratified random ...of estimators using power ... See full document

... the point biserial correlation coefficient between auxiliary attribute and study variable, Jhajj et al (2006) and Singh, et al (2008) defined ratio estimators of population mean when the priori information ... See full document

... (2013) estimators in the case of stratified random sampling when the information is available in form of attributes under ...proposed estimators are derived up to the first degree of ... See full document

... simple random sampling ...post-stratified random sampling, by considering six (6) separate-type estimators of the population ratio of two variables in ... See full document

... are stratified for optimal control of inventory ...situation, stratified random sampling is used to develop the efficient estimator to estimate the population parameters of stratified ... See full document

... population. Stratified random sampling is more suitable than other survey designs used for obtaining information from heterogeneous population for reasons of economy and ...of estimators for ... See full document

... The percentage relative efficiencies (PRE-1) of Table 2 reveal that apart from the estimator, R ˆ 8 , the pro- posed regression-type estimator, R ˆ 7 , based on both the sample means, x and x * , is more efficient than ... See full document

... simple random sampling and stratified random sampling ...the estimators under model based approach give better estimates than the estimators under design based approach ... See full document

... simple random sampling without replacement scheme with the supposition that the population mean of values is known to ...usual ratio estimator , where and are the means of and values respectively for ... See full document

... We review predictors that assume lognormality in Section ...a ratio-adjusted-for-sample- total (RAST) ...variance estimators are approximately unbiased for these ... See full document

... simple random samples from the target population, then, distribute the selected units into 𝑚 sets each of size 𝑚 units. Rank the units within each set by eye or by other economical method. Finally, select 𝑖 𝑡ℎ ... See full document

... combined-type estimators would perform better than the associated customa- ry combined-type ...optimum estimators among the proposed combined- type estimators were obtained both under the conditional ... See full document

... the sampling weights within every stratum, where we treat the individual strata as compact Abelian groups and demonstrate that the resulting proposed estimator is easier to ...simple random sampling ... See full document

... Some ratio estimators for estimating the population mean of the variable under study, which make use of information regarding the population proportion possessing certain attribute, are ...simple ... See full document

... New estimators for estimating the finite population mean using two auxiliary variables under simple and stratified sampling design is ...so, some estimators are shown to be a particular ... See full document

... Improved ratio and product exponential type estimators for finite population mean in stratified random sampling, Communications in Statistics: Theory and Methods, ... See full document

... of estimators, which use the information of two auxiliary variables in the stratified sampling, is proposed to estimate the population mean of the variable under ...of estimators are derived ... See full document