On ratio estimation in poststratified sampling over two occasions

Abstract

The theory of ratio estimation in a one-time poststratified sampling is extended to ratio estimation in poststratified sampling over two occasions. Two ratio-type double sampling estimators are proposed for the estimation of the second occasion population ratio (R2) in poststratified sampling over two occasions. One of the proposed estimators, e1, assumes knowledge of the first occasion population ratio (R1) while the second estimator, e2, does not make any such assumption. Both estimators are based on a partial replacement of sample units on the second occasion. Conditions under-which one estimator is to be preferred to the other are obtained for repeated samples of fixed sizes.



Keywords: Poststratification, successive sampling, ratio estimation, partial replacement, repeated samples.

[Global Jnl Mathematical Sci Vol.2(1) 2003: 43-50]