A Modern Gauss-Markov Theorem? Really?

Benedikt Pötscher and David Preinerstorfer

MPRA Paper from University Library of Munich, Germany

Abstract: We show that the theorems in Hansen (2021a) (the version accepted by Econometrica), except for one, are not new as they coincide with classical theorems like the good old Gauss-Markov or Aitken Theorem, respectively; the exceptional theorem is incorrect. Hansen (2021b)corrects this theorem. As a result, all theorems in the latter version coincide with the above mentioned classical theorems. Furthermore, we also show that the theorems in Hansen (2022)(the version forthcoming in Econometrica) either coincide with the classical theorems just mentioned, or contain extra assumptions that are alien to the Gauss-Markov or Aitken Theorem.

Keywords: Gauss-Markov Theorem; Aitken Theorem; unbiased estimation (search for similar items in EconPapers)
JEL-codes: C13 C20 (search for similar items in EconPapers)
Date: 2022-03
New Economics Papers: this item is included in nep-ore
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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https://mpra.ub.uni-muenchen.de/112607/9/MPRA_paper_112607.pdf original version (application/pdf)
https://mpra.ub.uni-muenchen.de/113122/17/MPRA_paper_113122.pdf revised version (application/pdf)
https://mpra.ub.uni-muenchen.de/115815/1/MPRA_paper_115815.pdf revised version (application/pdf)
https://mpra.ub.uni-muenchen.de/118952/1/MPRA_paper_118952.pdf revised version (application/pdf)

Related works:
Working Paper: A Modern Gauss-Markov Theorem? Really? (2023)
Working Paper: A Modern Gauss-Markov Theorem? Really? (2022)
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