A simple message for autocorrelation correctors: don't
A simple message for autocorrelation correctors: don't
Though the practice of ‘correcting for residual autocorrelation’ has long been critized, it is still commonly advocated and followed. A simple example shows that even when a linear regression model has first-order autoregressive errors, it is possible for autoregressive least squares estimation (e.g., Cochrane-Orcutt) to yield inconsistent estimates. This dramatically illustrates that ‘autocorrelation correction’ is invalid in general, and cannot be justified on the grounds of ‘robustifying’ estimation against the presence of residual serial correlation. Invalid common factors in I(1) systems also have adverse effects on inference. A ‘general-to-specific’ modelling strategy applied to the observed modelled variables avoids these difficulties.
autocorrelation-correction, common factors, serial correlation, modelling
267-288
Mizon, G. E.
2b8353b4-0af4-48db-b552-6867dc1f4583
1995
Mizon, G. E.
2b8353b4-0af4-48db-b552-6867dc1f4583
Abstract
Though the practice of ‘correcting for residual autocorrelation’ has long been critized, it is still commonly advocated and followed. A simple example shows that even when a linear regression model has first-order autoregressive errors, it is possible for autoregressive least squares estimation (e.g., Cochrane-Orcutt) to yield inconsistent estimates. This dramatically illustrates that ‘autocorrelation correction’ is invalid in general, and cannot be justified on the grounds of ‘robustifying’ estimation against the presence of residual serial correlation. Invalid common factors in I(1) systems also have adverse effects on inference. A ‘general-to-specific’ modelling strategy applied to the observed modelled variables avoids these difficulties.
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Published date: 1995
Keywords:
autocorrelation-correction, common factors, serial correlation, modelling
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Local EPrints ID: 32884
URI: http://eprints.soton.ac.uk/id/eprint/32884
ISSN: 0304-4076
PURE UUID: c1049926-93eb-417a-8ab3-900f8ff2a092
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Date deposited: 29 Mar 2007
Last modified: 15 Mar 2024 07:40
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Author:
G. E. Mizon
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