Abstract
Dash and Mishra [1] suggested an improved class of estimators without defining the optimum estimator. However, they gave the wrong Taylor’s series expression of their class of estimator and their minimum mean squared error expressions are also incorrect. Here we show that Ahmed et al.’s [2] class of chain estimators is more efficient than Dash and Mishra’s [1], with minimum mean squared error.
Keywords
Publication details
- DOI
- 10.24200/squjs.vol19iss2pp97-100
- Journal
- Sultan Qaboos University Journal for Science, 19(2), 97
- Publisher
- Sultan Qaboos University
- Open access
- Gold open access
- License
- CC BY 4.0
Cite this article
APA 7
Ahmed, M. S. (2015). Some Improved Estimators in Double Sampling Using two Auxiliary Variables. Sultan Qaboos University Journal for Science, 19(2), 97. https://doi.org/10.24200/squjs.vol19iss2pp97-100
MLA 9
Ahmed, Mohammad Saleh. "Some Improved Estimators in Double Sampling Using two Auxiliary Variables." Sultan Qaboos University Journal for Science, vol. 19, no. 2, 2015, pp. 97. https://doi.org/10.24200/squjs.vol19iss2pp97-100.
Chicago (author–date)
Ahmed, Mohammad Saleh. 2015. "Some Improved Estimators in Double Sampling Using two Auxiliary Variables." Sultan Qaboos University Journal for Science 19 (2): 97. https://doi.org/10.24200/squjs.vol19iss2pp97-100.
Harvard
Ahmed, M. S. (2015) 'Some Improved Estimators in Double Sampling Using two Auxiliary Variables', Sultan Qaboos University Journal for Science, 19(2), pp. 97. doi:10.24200/squjs.vol19iss2pp97-100.
Vancouver
Ahmed MS. Some Improved Estimators in Double Sampling Using two Auxiliary Variables. Sultan Qaboos University Journal for Science. 2015;19(2):97. doi:10.24200/squjs.vol19iss2pp97-100
IEEE
M. S. Ahmed, "Some Improved Estimators in Double Sampling Using two Auxiliary Variables," Sultan Qaboos University Journal for Science, vol. 19, no. 2, pp. 97, 2015, doi: 10.24200/squjs.vol19iss2pp97-100.