- 著者
- HIKARU HASEGAWA
- 出版者
- JAPANESE ECONOMIC ASSOCIATION
- 雑誌
- The Economic Studies Quarterly (ISSN:0557109X)
- 巻号頁・発行日
- vol.45, no.4, pp.306-320, 1994-12-20 (Released:2007-10-19)
- 参考文献数
- 11
In this paper, following Tiao, Tan and Chang (1977), we consider a constrained bivariate linear regression model and introduce two types of estimators after a preliminary test of independence of two equations. One of them is a pre-test estimator using an unrestricted estimator of covariance matrix and the other is one using a restricted estimator of covariance matrix. We derive their risks and compare sampling performances of several estimators.