Applications of a necessary and sufficient condition for OLS to be BLUE

This paper considers three examples from the statistics and econometrics literature where OLS is BLUE and demonstrates the easiness of verifying this result with the necessary and sufficient condition (NSC) derived by Zyskind (1967) and more recently Milliken and Albohali (1984). In particular, the third example is extended to a more general model where OLS is still BLUE. Once again this result is verified by the Milliken and Albohali NSC.

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Year of publication:	1989
Authors:	Baltagi, Badi H.
Published in:	Statistics & Probability Letters. - Elsevier, ISSN 0167-7152. - Vol. 8.1989, 5, p. 457-461
Publisher:	Elsevier
Keywords:	general linear model seemingly unrelated regressions pooled time-series of cross-sections error components models grouped data

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Type of publication:	Article
Source:	RePEc - Research Papers in Economics

Persistent link: https://www.econbiz.de/10005319853