[PDF] Top 20 Improved Ratio-type Estimators of Population Mean In Ranked Set Sampling Using Two Concomitant Variables

... Ranked set sampling (RSS) is a sampling technique which is used to reduce cost and increase efficiency in that situation where the measurement of survey variable is costly and time consuming, ... See full document

... to ratio type estimator for improved estimation of population mean of the study ...exponential type ratio and product estimators of population mean ... See full document

... surveys using multi-stage sampling the survey practitioner comes across more than one auxiliary variable either positively or negatively correlated with main variable (y) under study at different ...the ... See full document

... of ratio estimator y R d   ˆ 1 (say), the product estimator y P d   ˆ 2 , exponential chain type ratio estimator y Re d   ˆ 3 , exponential chain type product estimator y Pe d   ˆ 4 , ... See full document

... a ratio-cum-product type estimator of finite population mean using known coefficient of kurtosis and median of auxiliary variable has been ...and mean squared error of the ... See full document

... the population ratio (R) of the population means of two variables (y and x) under Simple Random Sampling (SRS) scheme, using a variable transformation of the auxiliary ... See full document

... of estimators for the population mean has been suggested, and to compare its performance an empirical study has been carried ...the estimators included under the study. Moreover, the suggested ... See full document

... In sampling theory the role of auxiliary information has a great ...that using suitable auxiliary information such as population total, mean, skewness, correlation, attribute ...their ... See full document

... of estimators using information on auxiliary ...of population proportion possessing an attribute (highly correlated with study variable ...auxiliary variables are not available ...in ... See full document

... estimating population parameters like the mean, total or ratio, product and regression, sample surveys experts sometimes use auxiliary information to improve precision of the ...the variables ... See full document

... In this section, we computed mean square errors and percent relative efficiencies of the existing and new estimators and the results are given in Tables 2 and 3. We considered the real life data sets by ... See full document

... proposed improved ratio type estimators of population mean, Yan and Tian (2010), suggested the estimators of population mean using coefficient of ... See full document

... the sampling plan or to enhance the estimation of the properties of the variables of ...regression type ratio estimators using known values of the population coefficient ... See full document

... generalized ratio-type estimator based on ranked set sampling (RSS) is proposed for estimating population mean using the known population parameters of ... See full document

... proposed estimators in stratified random ...some ratio cum product estimators in simple random ...exponential ratio type ...suggested estimators in stratified random ... See full document

... comparing all estimators belonging to two different classes is not easy. Because, an estimator has its own limitations and can also be suitable for a particular situation in terms of the relationship ... See full document

... of population variance using correlation coefficient and quartiles of an auxiliary variable under simple random sampling ...the mean square error of the proposed estimator have been ...minimum ... See full document

... exponential ratio type estimators of population mean under the situations when cer- tain observations for some sampling units are ...and mean square errors of the proposed ... See full document

... generalized ratio-cum-product estimator using multi- auxiliary variables in two phase ...the ratio estimation component has 1,2, … , 𝑘 auxiliary variables all in full information ... See full document

... Rank set sampling (RSS) was suggested by McIntyre (1952) for estimating mean pasture and forage ...double ranked set sampling design for estimating population ...extreme ... See full document