© 1990 by Biometrika Trust
AMENDMENTS AND CORRECTIONS |
Testing for a unit root In the presence of moving average errors
| Abstract |
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The first four lines of page 54 should read as follows.
Phillips & Perron (1987) observe that the asymptotic distribution of the ordinary least-squares estimators of the autoregressine parameter in model (5) and its associated t statistic are invariant to whether the model is a random walk with or without drift. By similar reasoning our results for
and associated t statistic...