In this paper exponential ratio and exponential product type estimators using two auxiliary variables are proposed for estimating unknown population variance Sy2. Problem is extended to the case of two-phase sampling. Theoretical results are supported by an empirical study.
Comments: 8 pages
[v1] 8 Mar 2010
Unique-IP document downloads: 96 times
Add your own feedback and questions here:
You are equally welcome to be positive or negative about any paper but please be polite. If you are being critical you must mention at least one specific error, otherwise your comment will be deleted as unhelpful.