MODIFIED CLASS OF ESTIMATOR OF FINITE POPULATION VARIANCE

Authors

  • Y. Zakari
  • J. O. Muili
  • A. Audu

Keywords:

Efficiency, Auxiliary variable, Mean Square Error, Unknown weight

Abstract

In this paper, we proposed a class of ratio estimators for finite population variance.  The proposed estimators were obtained by transforming Javed et al. (2018) estimators. The mean square errors (MSEs) of the proposed estimators have been obtained up to first order of approximation using Taylor’s Series Expansion and the conditions for their efficiencies over some existing variance estimators have been established. The efficiencies of proposed estimators based on optimal value of the constant, exhibit significant improvement over the estimators considered in the study. The numerical illustration was also conducted to corroborate the theoretical results. The results of the empirical study show that the proposed estimators are more efficient over existing estimators.

References

Abdullahi, K. N. (2009). Unpublished PhD Thesis. Ahmadu Bello University, Zaria-Nigeria.

Adriano, D. C. (2003). Trace elements in the terrestrial environment. Springer Verlag, New York.

Ahmed, M. S., Tanko, A. I., Eduvie, M. O. and Ahmed, M. (2017). Assessment of Groundwater Vulnerability in Kaduna Metropolis, Northwest Nigeria. Journal of Geoscience and Environment Protection. 5(06), 99.

Chaubey, A. K., Taddesse, A., Assefa, D. and Hibstie, A. Y. (2011). Elemental Analysis of Alluvial Soil Samples Using Neutron Activation Techniques in Blue Nile Basin, East Gojjam, Ethiopia. E-International Scientific Research Journal. III(4), 232-242.

Farzad, H., Hassan, S. and Mehdi, F. (2015). Factors affecting the infiltration of agricultural soils: review International Journal of Agronomy and Agricultural Research (IJAAR). 6(5), 21-35.

Haque, M. A., Hoque, M., Modal, M. and Tauhid-Ur-Rahman (2013a). Characterization of leachate and solid waste of Dhaka city corporation landfill site for solid waste stabilization. American Journal of Civil Engineering and Architecture. 1(2), 39-42.

Haque, M. A., Hoque, M. A., Modal, M. S. A. and Tauhid-Ur-Rahman, M. (2013b). Characterization of Leachate and Solid Waste of Dhaka City Corporation Landfill Site for Solid Waste Stabilization. American Journal of Civil Engineering and Architecture. 1(2), 39-42.

Hevesy, G. and Levi, H. (1936). Det. Kgl. Danske Videnskabernes Selskab Mathematisk-Fysiske Meddelelser. 14(5), 3.

Kaminski, M. D. and Landsberger, S. (2000). Heavy metals in urban soils of east St. Louis, IL Part II: Leaching characteristics and modeling. Journal of the Air & Waste Management Association. 50(9), 1680-1687.

Kirpichtchikova, T. A., Manceau, A., Spadini, L., Panfili, F., Marcus, M. A. and Jacquet, T. (2006). Speciation and solubility of heavy metals in contaminated soil using X-ray microfluorescence, EXAFS spectroscopy, chemical extraction, and thermodynamic modeling. Geochimica et Cosmochimica Acta. 70(9), 2163-2190.

Kumar, D., Khare, M. and Alappat, B. (2002). Threat to the groundwater from the municipal landfill sites in Delhi, India. Proceedings of the 2002 Proceedings of 28th WEDC Conference, 18-22.

Li, X., Liu, L., Wang, Y., Luo, G., Chen, X., Yang, X., Hall, M. H., Guo, R., Wang, H. and Cui, J. (2013). Heavy metal contamination of urban soil in an old industrial city (Shenyang) in Northeast China. Geoderma. 192, 50-58.

Matini, L., Ongoka, P. R. and Tathy, J. P. (2011). Heavy metals in soil on spoil heap of an abandoned lead ore treatment plant, SE Congo-Brazzaville. African journal of environmental science and technology. 5(2), 89-97.

McLean, J. and Bledsoe, B. (2002). Behavior of Metals In Soils. United States of America: United States Environmental Protection Agency, Washington, D.C.

Mohammed, A., Umar, S., Abdulkarim, M. S., Ismaila, A., Kahinde, M. and Ukiri, M. (2019). Assessment of metal availability in dumpsite soil using neutron activation analysis. Department of Physics, Ahmadu Bello University, Zaria-Nigeria.

Olarewaju, G., Sa’id, M. and Ayodele, J. (2012). Trace metal concentrations in leachates from open dumpsites in Lokoja, Kogi state, Nigeria. Bayero Journal of Pure and Applied Sciences. 5(2), 143–147.

Oni, A., Hassan, A. and Li, P. (2011). Toxicity of leachates from the Aba-Eku landfill leachate lagoon, Ibadan, south-western Nigeria. Advances Appl. Sci. 2(2), 450-460.

Piperno, A. (1998). Classification and diagnosis of iron overload. Haematologica. 83(5), 447-455.

Rajeswari, T. R. and Namburu, s. (2014). Impact of Heavy Metals on Environmental Pollution. Journal of Chemical and Pharmaceutical Sciences. (3), 175-181.

Tchounwou, P. B., Yedjou, C. G., Patlolla, A. K. and Sutton, D. J. (2012). Heavy Metal Toxicity and the Environment. Molecular, Clinical and Environmental Toxicology 10.1007/978-3-7643-8340-4_6, 133-164.

Published

2023-04-11

How to Cite

Zakari, Y., Muili, J. O., & Audu, A. (2023). MODIFIED CLASS OF ESTIMATOR OF FINITE POPULATION VARIANCE. FUDMA JOURNAL OF SCIENCES, 3(4), 67 - 78. Retrieved from https://fjs.fudutsinma.edu.ng/index.php/fjs/article/view/1622