Table 2 Diagnostic test results.
Policy type | Explanatory variable | Test method | Statistic | P-value | Model judgement |
|---|---|---|---|---|---|
Pilot ETS policy | lnCEa | F-test | 11.5800 | 0.0000 | FE model outperforms OLS model |
Hausmann test | 44.6900 | 0.0000 | FE model outperforms RE model | ||
lnCIa | F-test | 83.72 | 0.0000 | FE model outperforms OLS model | |
Hausmann test | 360.67 | 0.0000 | FE model outperforms RE model | ||
National ETS policy | lnCEb | F-test | 167.2100 | 0.0000 | FE model outperforms OLS model |
Hausmann test | 27.28 | 0.0024 | FE model outperforms RE model | ||
lnCIb | F-test | 172.4000 | 0.0000 | FE model outperforms OLS model | |
Hausmann test | 18.7800 | 0.0431 | FE model outperforms RE model | ||
TGC policy | lnREG | F-test | 42.02 | 0.0000 | FE model outperforms OLS model |
Hausmann test | 46.09 | 0.0000 | FE model outperforms RE model | ||
lnPREG | F-test | 16.52 | 0.0000 | FE model outperforms OLS model | |
Hausmann test | 44.71 | 0.0000 | FE model outperforms RE model | ||
GPT policy | lnREG | F-test | 52.61 | 0.0000 | FE model outperforms OLS model |
Hausmann test | 52.24 | 0.0000 | FE model outperforms RE model | ||
lnPREG | F-test | 19.96 | 0.0000 | FE model outperforms OLS model | |
Hausmann test | 42.35 | 0.0000 | FE model outperforms RE model |
