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Non-linear quantile unit root test and PPP: more evidence from Africa

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  • Mohsen Bahmani-Oskooee
  • Tsangyao Chang
  • Zahra (Mila) Elmi
  • Abera Gelan
  • Omid Ranjbar

Abstract

It is now a common practice to establish stationarity of the real exchange rate as a sign of purchasing power parity (PPP) hypothesis. In this article, we consider the real effective exchange rates of 29 African countries. When we apply conventional linear unit root tests, we find support for the PPP in eight countries. However, when we shift to the newly introduced non-linear quantile unit root test, support for the PPP increases to 15 countries.

Suggested Citation

  • Mohsen Bahmani-Oskooee & Tsangyao Chang & Zahra (Mila) Elmi & Abera Gelan & Omid Ranjbar, 2018. "Non-linear quantile unit root test and PPP: more evidence from Africa," Applied Economics Letters, Taylor & Francis Journals, vol. 25(7), pages 465-471, April.
    • Handle: RePEc:taf:apeclt:v:25:y:2018:i:7:p:465-471
    DOI: 10.1080/13504851.2017.1335385
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    Cited by:

    1. Mohsen Bahmani‐Oskooee & Tsangyao Chang & Farhang Niroomand & Omid Ranjbar, 2020. "Fourier nonlinear quantile unit root test and PPP in Africa," Bulletin of Economic Research, Wiley Blackwell, vol. 72(4), pages 451-481, October.
    2. Troster, Victor & Shahbaz, Muhammad & Uddin, Gazi Salah, 2018. "Renewable energy, oil prices, and economic activity: A Granger-causality in quantiles analysis," Energy Economics, Elsevier, vol. 70(C), pages 440-452.

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