[PDF] Top 20 Efficient Product-type Exponential Estimator for Population Variance

... of population characteristics. Estimation of the finite population variance has great significance in various fields such as in matters of health, variation in body temperature, pulse beat and blood ... See full document

... new exponential product type estimator for estimating the population variance using auxiliary ...proposed exponential product-type estimator have been ... See full document

... ratio type estimators of population mean, Yan and Tian (2010), suggested the estimators of population mean using coefficient of skewness of auxiliary variable, Yadav (2011), proposed an ... See full document

... improved exponential product type estimators of finite population mean have been suggested in presence of auxiliary ...the exponential estimator using auxiliary attribute ... See full document

... a population 𝑈 = (𝑈 1 , 𝑈 2 , … , 𝑈 𝑁 ) of size N from which a sample of size 𝑛 is drawn using simple random sampling without ...its variance 𝜎 𝑠 2 is assumed to be known ... See full document

... an efficient class of ratio-in-exponential-type estimators with two concomitant variables using Ranked Set Sampling (RSS) scheme which improves the available ... See full document

... the population mean in the presence of an auxiliary variable has been widely discussed in finite population sampling ...the population mean using one auxiliary variable in the stratified random ... See full document

... develop efficient estimators is a long ...ratio estimator, when the study variable y and auxiliary variable x are positively ...ratio estimator does not perform ...a product estimator ... See full document

... the exponential product and ratio estimators proposed by (Bahl & Tuteja, ...The exponential ratio estimators were proposed by Singh and Vishwakarma (2007) followed the work of Bahl and Tuteja ... See full document

... ratio estimator, Murthy(1964) envisaged product estimator and Searl(1964), Sisodia and Dwibedi(1981) utilised co- efficient of variation of auxiliary variable in their respective ratio and ... See full document

... more efficient than the usual unbiased estimator y , ratio estimator in two- phase sampling y R (d ) , two-phase sampling product estimator y P (d ) , two-phase sampling versions of ... See full document

... cum product estimator for estimating finite population ...proposed estimator was obtained by transforming [MS17] ...proposed estimator has been obtained and the conditions for it ... See full document

... In sampling literature many authors have suggested estimators using auxiliary information. Koyuncu and Kadilar (2010) defined a general combined class in stratified random sampling to get a compact expression for the ... See full document

... clustered population and proposed four unbiased estimators in adaptive cluster ...network variance is close to population ...Thompson type estimator was the most efficient ... See full document

... of population parameters of the study ...ratio type estimator is used for improvement over the parameters of the population under ...the product type estimators are used for ... See full document

... Remark 5.1: It is important to mention that the optimum choice of  = ( 1 − 2  )( 1 − 2  ) depends upon the value of C =  yx C y C x .Reddy (1978) has shown that the value of ‘C’ is more stable than other ... See full document

... the population mean   Y in 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

... was the estimate of heritability significantly different from expectation for the parameter set with lowest heritability and population size. Constraining the estimates [r] ... See full document

... same population to estimate some population parameters for current ...same population is sampled repeatedly, it is said that a first sample has been taken (on one occasion) from a population ... See full document

... various population parameters such as the population correlation coefficients and coefficients of variation, as they remain stable over a period of time, can be gathered from past survey, pilot survey, ... See full document