Estimating Standard Errors in Finance Panel Data Sets: Comparing Approaches

Mitchell Petersen

No 11280, NBER Working Papers from National Bureau of Economic Research, Inc

Abstract: In both corporate finance and asset pricing empirical work, researchers are often confronted with panel data. In these data sets, the residuals may be correlated across firms and across time, and OLS standard errors can be biased. Historically, the two literatures have used different solutions to this problem. Corporate finance has relied on Rogers standard errors, while asset pricing has used the Fama-MacBeth procedure to estimate standard errors. This paper will examine the different methods used in the literature and explain when the different methods yield the same (and correct) standard errors and when they diverge. The intent is to provide intuition as to why the different approaches sometimes give different answers and give researchers guidance for their use.

JEL-codes: C1 G1 G3 (search for similar items in EconPapers)
Date: 2005-04
New Economics Papers: this item is included in nep-ecm and nep-fin
Note: AP CF
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Citations: View citations in EconPapers (82)

Published as Petersen, Mitchell A. "Estimating Standard Errors in Finance Panel Data Sets: Comparing Approaches." Review of Financial Studies 22, 1 (January 2009): 435-80.

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Journal Article: Estimating Standard Errors in Finance Panel Data Sets: Comparing Approaches (2009)
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