A sharp analysis on the asymptotic behavior of the Durbin-Watson statistic for the first-order autoregressive process
ESAIM: Probability and Statistics, Tome 17 (2013), pp. 500-530.

The purpose of this paper is to provide a sharp analysis on the asymptotic behavior of the Durbin-Watson statistic. We focus our attention on the first-order autoregressive process where the driven noise is also given by a first-order autoregressive process. We establish the almost sure convergence and the asymptotic normality for both the least squares estimator of the unknown parameter of the autoregressive process as well as for the serial correlation estimator associated with the driven noise. In addition, the almost sure rates of convergence of our estimates are also provided. It allows us to establish the almost sure convergence and the asymptotic normality for the Durbin-Watson statistic. Finally, we propose a new bilateral statistical test for residual autocorrelation. We show how our statistical test procedure performs better, from a theoretical and a practical point of view, than the commonly used Box-Pierce and Ljung-Box procedures, even on small-sized samples.

DOI : 10.1051/ps/2012005
Classification : 60F05, 60G42, 62F05, 62G05, 62M10
Mots clés : Durbin-Watson statistic, autoregressive process, residual autocorrelation, statistical test for serial correlation
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     title = {A sharp analysis on the asymptotic behavior of the {Durbin-Watson} statistic for the first-order autoregressive process},
     journal = {ESAIM: Probability and Statistics},
     pages = {500--530},
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Bercu, Bernard; Proïa, Frédéric. A sharp analysis on the asymptotic behavior of the Durbin-Watson statistic for the first-order autoregressive process. ESAIM: Probability and Statistics, Tome 17 (2013), pp. 500-530. doi : 10.1051/ps/2012005. http://archive.numdam.org/articles/10.1051/ps/2012005/

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