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On the Existence of the Moments of the Asymptotic Trace Statistic

By Deniz Dilan Karaman Örsal and Bernd Droge

Abstract

In this note we establish the existence of the first two moments of the asymptotic trace statistic, which appears as weak limit of the likelihood ratio statistic for testing the cointe- gration rank in a vector autoregressive model and whose moments may be used to develop panel cointegration tests. Moreover, we justify the common practice to approximate these moments by simulating a certain statistic, which converges weakly to the asymptotic trace statistic. To accomplish this we show that the moments of the mentioned statistic converge to those of the asymptotic trace statistic as the time dimension tends to infinity.Cointegration, Trace statistic, Asymptotic moments, Uniform integrability

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