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RATHER, KHALID UL ISLAM; JEELANI, M. IQBAL; SHAH, M. YOUNIS; TABASSUM, AFSHAN; RIZVI, S.E.H
Journal of Science and Arts, 01/2022, Volume: 22, Issue: 2Journal Article
In the current investigation, we have suggested a Difference Cum-Exponential Type Efficient Estimator of Population variance of the study variable using information on the auxiliary variable. Up to the first order of approximation, the proposed estimator's bias and mean square error (MSE) expressions are derived and suggested optimum estimator is also found, with its optimal qualities are investigated. The suggested estimator is proven to be more competent than sample variance, classic ratio estimators based on Isaki , Singh et al. and Kadilar and Cingi estimators in 1-3. Numerical study is also carried out by using real data sets.
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