Almost unbiased ratio and product estimators based on interpenetrating subsamples

Abstract

This paper proposes two classes of almost unbiased ratio and product estimators, in the case of interpenetrating subsample designs, which include the estimators considered by earlier authors. Several other almost unbiased ratio and product estimatbrs are given whlch are particular members of the proposed classes of estimators. Optimum estimators are also identified in these classes.

Keywords:

• product estimators
• ratio estimators
• approximate unbiasedness
• interpenetrating samples
• minimum variance estimators