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Unit root tests for ARIMA(0, 1, q) models with irregularly observed samples

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  • Shin, Dong Wan
  • Sarkar, Sahadeb

Abstract

For an ARIMA(0,1,q) model having an autoregressive unit root with an irregularly observed sample we propose a unit root test based on instrumental variable estimation. The test is shown to have the same asymptotic distribution as the ordinary least squares estimator of the unit root in an AR(1) model tabulated by Dickey and Fuller (J. Amer. Statist. 74 (1979) 427-431) for the complete data situation. Some simulation results for ARIMA(0,1,1) models under A-B sampling schemes and an illustrative example are given.

Suggested Citation

  • Shin, Dong Wan & Sarkar, Sahadeb, 1994. "Unit root tests for ARIMA(0, 1, q) models with irregularly observed samples," Statistics & Probability Letters, Elsevier, vol. 19(3), pages 189-194, February.
    • Handle: RePEc:eee:stapro:v:19:y:1994:i:3:p:189-194
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    Cited by:

    1. Shin, Dong Wan & Sarkar, Sahadeb & Lee, Jong Hyup, 1996. "Unit root tests for time series with outliers," Statistics & Probability Letters, Elsevier, vol. 30(3), pages 189-197, October.

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