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Change of origin and scale in ratio and difference methods of estimation in sampling
Author(s) -
Srivenkataramana T.
Publication year - 1978
Publication title -
canadian journal of statistics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.804
H-Index - 51
eISSN - 1708-945X
pISSN - 0319-5724
DOI - 10.2307/3314828
Subject(s) - estimator , statistics , mathematics , mean squared error , simple random sample , population mean , ratio estimator , variable (mathematics) , efficiency , population , estimation , computation , scale (ratio) , sample size determination , bias of an estimator , minimum variance unbiased estimator , algorithm , mathematical analysis , geography , demography , management , cartography , sociology , economics
This paper discusses two estimators of the mean of a finite population based on a simple random sample from it, when supplementary information on a variable positively correlated with the variable of interest is available. Simultaneous reductions in absolute bias and mean square error of the estimator are seen as compared with those of the traditional estimator in the ratio method of estimation. The suggested estimators are simple for computation and there is no appreciable increase in the cost as well.