A Class of Exponential Regression Type Estimators for Population Variance in Two-Phase Sampling

Abstract

This article deals with the problems of efficient estimation of population variance in two-phase (double) sampling. Using information on two auxiliary variables, a class of chain exponential to regression type estimators has been proposed and its properties are studied under two different structures of two-phase sampling. Superiority of suggested class of estimators over some existing ones is established through numerical illustrations. Suitable recommendations to the survey statistician are also made.

Keywords

• Double sampling
• study variable
• auxiliary variable
• chain-type
• Exponential
• regression