An approximation to order T-2 is obtained for the bias of the least-squares estimator in the stationary ARX model which yields generalisations of Kendall's and White's classic results for particular variants of AR(1) models. The results show that generally the second-order approximation is considerably better than its first-order counterpart in ARX models. This is also largely true for AR(1) models except that in such models second-order approximations may be vulnerable in the near unit root case.
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Paper provided by University of Exeter, School of Business and Economics in its series Discussion Papers with number
99/03.
Length: 52 pages Date of creation: 1999 Date of revision: Handle: RePEc:fth:exetec:99/03
Contact details of provider: Postal: School of Business and Economics University of Exeter Streatham Court Rennes Drive Exeter EX4 4PU Phone: (01392) 263218 Fax: (01392) 263242 Web page: http://www.exeter.ac.uk/sobe/ More information through EDIRC
Find related papers by JEL classification: C13 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods: General - - - Estimation C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions
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