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Sublime estimators of population variance using parameter median of study variable

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Author Affiliations

  • 1Department of Statistics, Babasaheb Bhimrao Ambedkar University, Lucknow-226025, UP, India
  • 2Department of Statistics, Pondicherry University, Puducherry-605 014, India

Res. J. Mathematical & Statistical Sci., Volume 7, Issue (3), Pages 22-37, September,12 (2019)

Abstract

In the present article, we propose some enhanced ratio type and Searle type estimators for estimating parameter variance utilizing known parameter median of study variable under investigation. The study of the sampling properties of the suggested estimators are derived up to the approximation of order one. The proposed estimators are compared with the competing estimators of variance parameter of primary variable, utilizing the known auxiliary information. Numerical example depicts that the suggested estimators performs better than the competing estimators of population variance.

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