| Mean utility | SD | Min. | Max. | RMSE | MAE | Spearman correlation | p-value |
---|---|---|---|---|---|---|---|---|
Observed utility (Dutch tariff) | 0.834 | 0.171 | −0.134 | 1 | - | - | - | - |
Observed utility (U.K. tariff) | 0.803 | 0.197 | − 0.239 | 1 | - | - | - | - |
Predicted utility (Versteegh (6)) | 0.866 | 0.135 | −0.298 | 0.978 | 0.113 | 0.080 | 0.76 | < 0.001* |
Predicted utility (Longworth (7) (Dutch tariff) | 0.835 | 0.127 | −0.088 | 0.959 | 0.106 | 0.078 | 0.77 | 0.687* |
Predicted utility (Longworth (7) (U.K. tariff) | 0.810 | 0.152 | −0.307 | 0.955 | 0.114 | 0.085 | 0.79 | 0.026** |
Predicted utility (Marriott (9)) | 0.813 | 0.185 | −0.159 | 1.061 | 0.122 | 0.089 | 0.75 | 0.001** |