Research Article
Sensitivity Analysis of Stationarity Tests’ Outcome to Time Series Facets and Test Parameters
Table 2
Impact of drift and trend component consideration and time series facets on test results and critical values of ADF test.
| Model equation (for ADF) | d1 | d2 | d3 | d4 | Test result | Critical value | Test result | Critical value | Test result | Critical value | Test result | Critical value |
| Without drift and trend components | −0.6790 | −1.9412 | −0.0399 | −1.9412 | −0.7335 | −1.9412 | −0.0200 | −1.9412 | With only drift component | −16.7321 | −2.8683 | −2.6612 | −2.8683 | −13.7298 | −2.8683 | −2.7889 | −2.8683 | With both drift and trend components | −16.7263 | −3.4199 | −10.6335 | −3.4199 | −13.7848 | −3.4199 | −9.8550 | −3.4199 |
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