Abstract
Based on symmetric estimation and the weighted symmetric estimation of Pantula et al. (1994) and Park and Fuller (1995), new semiparametric tests for testing a unit root under the general situation of Phillips (1987) and Phillips and Perron (1988) are developed. A Monte-Carlo simulation shows that the new tests have better power than the semiparametric tests of Phillips (1987) and Phillips and Perron (1988), under first-order moving average errors.
| Original language | English |
|---|---|
| Pages (from-to) | 177-184 |
| Number of pages | 8 |
| Journal | Statistics and Probability Letters |
| Volume | 33 |
| Issue number | 2 |
| DOIs | |
| State | Published - 30 Apr 1997 |
Bibliographical note
Funding Information:The authors wish to thank the referee for the valuable comments. This work is supported by Korea Science and Engineering Foundation grant 94-0701-0101-3.
Keywords
- Semiparametric test
- Symmetric estimator
- Unit root test
- Weighted symmetric estimator