Mean Group Tests for Stationarity in Heterogeneous Panels

Yongcheol Shin and Andy Snell

Edinburgh School of Economics Discussion Paper Series from Edinburgh School of Economics, University of Edinburgh

Abstract: This paper proposes the panel-based mean group tests for the null of stationarity against the alternative of unit roots in the presence of both heterogeneity across cross-section units and serial correlation across time periods. Using both sequential and joint asymptotic analyses the proposed test statistic is shown to be distributed as standard normal under the null for large N (number of groups) and large T (number of time periods). Monte Carlo results support the use of join asymptotic limits (under further condition that N/T -> 0) as a guide to finite sample performance, but also clearly indicate that the power of our suggested panel-based test is substantially higher than that of the single time series-based test.

Keywords: mean group tests; heterogeneous panels; joint asymptotic theory; stationarity; unit roots; Monte Carlo simulation; finite sample adjustment (search for similar items in EconPapers)
JEL-codes: C12 C15 C22 C23 (search for similar items in EconPapers)
Pages: 33
Date: 2002-08
New Economics Papers: this item is included in nep-ecm and nep-ets
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Citations: View citations in EconPapers (3)

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Related works:
Journal Article: Mean group tests for stationarity in heterogeneous panels (2006)
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Persistent link: https://EconPapers.repec.org/RePEc:edn:esedps:107

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