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| 構造変化を伴うZivot-Andrews単位根検定× | Zivot-Andrews構造変化検定× | |
|---|---|---|
| 分野 | 計量経済学 | 計量経済学 |
| 系統 | Regression model | Regression model |
| 提唱年 | 1992 | 1992 |
| 提唱者 | Eric Zivot and Donald W. K. Andrews | Eric Zivot and Donald W. K. Andrews |
| 種類 | Unit root test with endogenous structural break | Unit root test with endogenous structural break |
| 原典 | Zivot, E., & Andrews, D. W. K. (1992). Further evidence on the great crash, the oil-price shock, and the unit-root hypothesis. Journal of Business & Economic Statistics, 10(3), 251–270. DOI ↗ | Zivot, E., & Andrews, D. W. K. (1992). Further evidence on the great crash, the oil-price shock, and the unit-root hypothesis. Journal of Business & Economic Statistics, 10(3), 251–270. DOI ↗ |
| 別名 | Zivot-Andrews test, ZA unit root test, endogenous structural break unit root test, ZA breakpoint test | ZA test, Zivot-Andrews unit root test, endogenous structural break unit root test, ZA structural break test |
| 関連 | 6 | 6 |
| 概要≠ | The Zivot-Andrews test is an endogenous structural break unit root test that determines the break point from the data rather than imposing it externally. It tests for a unit root against the alternative of stationarity around a single structural break — in the mean, the trend, or both — choosing the break date that provides the strongest evidence against the null. | The Zivot-Andrews (ZA) test is a unit root test that endogenously identifies the most likely location of a single structural break in a time series. Unlike the standard ADF test, it does not require the researcher to pre-specify when the break occurred, making it robust to data-driven regime shifts such as policy changes, financial crises, or major economic events. |
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