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Estimation Bias and Inference in Overlapping Autoregressions: Implications for the Target Zone Literature


  • Zsolt Darvas


Samples with overlapping observations are used for the study of uncovered interest rate parity, the predictability of long run stock returns, and the credibility of exchange rate target zones. This paper quantifies the biases in parameter estimation and size distortions of hypothesis tests of overlapping linear and polynomial autoregressions, which have been used in target zone applications. We show that both estimation bias and size distortions generally depend on the amount of overlap, the sample size, and the autoregressive root of the data generating process. In particular, the estimates are biased in a way that makes it more likely that the predictions of the Bertola-Svensson-model will be supported. Size distortions of various tests also turn out to be substantial even when using a heteroskedasticity and autocorrelation consistent covariance matrix.

Suggested Citation

  • Zsolt Darvas, 2007. "Estimation Bias and Inference in Overlapping Autoregressions: Implications for the Target Zone Literature," Working Papers 0701, Department of Mathematical Economics and Economic Analysis, Corvinus University of Budapest.
  • Handle: RePEc:mkg:wpaper:0701

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    2. Zsolt Darvas, 2011. "Beyond the Crisis: Prospects for Emerging Europe," Comparative Economic Studies, Palgrave Macmillan;Association for Comparative Economic Studies, vol. 53(2), pages 261-290, June.
    3. Wagner, Martin, 2012. "The Phillips unit root tests for polynomials of integrated processes," Economics Letters, Elsevier, vol. 114(3), pages 299-303.
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    More about this item


    drift-adjustment method; exchange rate target zone; HAC covariance; overlapping observations; polynomial autoregression; size distortions; small sample bias;

    JEL classification:

    • C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes
    • F31 - International Economics - - International Finance - - - Foreign Exchange

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