[PDF] Top 20 GENERALIZED RATIO AND PRODUCT METHODS OF ESTIMATION IN SURVEY SAMPLING

... For simple random or varying probability sampling with replacement or any scheme involving independent subsamples, V with i + j > 2 are generally small, ij see Murthy [1967, pp.380-381]. Thus to have tangible ... See full document

... using ratio-cum-product estimation method with multi- auxiliary variables in two phase ...case methods of utilizing auxiliary variables ...of ratio or product estimators in both ... See full document

... The ratio estimator given in (1) is used for improving the precision of the estimate of the population mean as compared to us ual sample mean estimator whenever a positive correlat ion e xists between the study ... See full document

... in sampling theory. Auxiliary variables are commonly used in sample survey practices to obtain improved designs and to achieve higher precision in the es- timates of some population parameters such as the ... See full document

... proposed estimation of the finite population mean with population proportion of an auxiliary variable while Jhajj, Sharma and Grover [9] proposed a general family of estimators using information on auxiliary ... See full document

... mean, ratio, proportion, ...context, ratio, product and regression methods of estimation are good ...and product-type estimators take advantage of the correlation between the ... See full document

... in sampling theory. Auxiliary variables are commonly used in sample survey practices to obtain improved designs and to achieve higher precision in the es- timates of some population parameters such as the ... See full document

... in estimation techniques of sample surveys to increase the precision of the sample ...used methods are the ratio and regression methods of estimation, which provide better estimators ... See full document

... the estimation of population parameters like mean, proportion, variance, and ratio of two population means are common in virtually all discipline and facet of ...sample survey design) results in ... See full document

... In survey sampling, the estimation of population variance of the variable under study has attracted the attention of large number of statisticians to know the variation in the ...(double) ... See full document

... proposed estimation of the finite population mean with population proportion of an auxiliary variable while Jhajj, Sharma and Grover [9] proposed a general family of estimators using information on auxiliary ... See full document

... modified ratio estimator of population mean of the study variable using the linear combination of known values of Quartile deviation and Median of the auxiliary variable under Rank set ...modified ratio ... See full document

... Random Sampling was applied 50 times and obtained mean of means, and mean of variances and ...random sampling is a good selection for this ...for ratio estimates compared to regression estimates ... See full document

... and methods for estimation of its ...and methods that are been used for cost estimation of software, but it is too much di cult for deciding that which method is appropriate for cost ...cost ... See full document

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

... In survey sampling situations, auxiliary information is generally used to improve the precision or accuracy of the estimator of unknown population parameter of interest under the assumption that all the ... See full document

... of estimation of population mean in two-phase sampling. A ratio-product estimator of population mean using known coefficient of kurtosis of two auxiliary variates has been ...two-phase ... See full document

... Accuracy of the proposed methods was calculated as the percentage recoveries of pure samples of the studied drugs. The concentrations were calculated from the corresponding regression equations and the results are ... See full document

... residents, sampling at the ZD level was consistently better than sam- pling at the concession level and PPS methods produced estimates further from the true population mean (figure ...that sampling a ... See full document

... Thus these methods are useful only with closely related groups of animais, where all the characters being studied occur in sorne form in all the individuals of the [r] ... See full document