Table 2.
Estimated parameters and percentage of premium price.
| Variable | β | Percentage, Premium Price a |
|---|---|---|
| Organic | 0.141 ** | +15.1 |
| (0.0710) | ||
| GIs | 0.776 *** | +117.0 |
| (0.0570) | ||
| Italian Origin | 0.301 *** | +35.0 |
| (0.0830) | ||
| Non-European Origin | −0.114 *** | −10.8 |
| (0.0210) | ||
| Unfiltered | +0.245 ** | +21.6 |
| (0.1030) | ||
| Product in promotion | −0.001 | −0.1 |
| (0.0060) | ||
| Other Packaging Material | −0.123 | −11.5 |
| (0.1020) | ||
| 0.75 L Package Size | 0.143 *** | +15.4 |
| (0.0450) | ||
| 0.5 L Package Size | 0.115 * | +12.2 |
| (0.0630) | ||
| Constant | 1.726 *** | |
| (0.0970) | ||
| Number of Observations | 982 | |
| R-square | 0.961 | |
| Specification test | ||
| Ramsey’s RESET F(2, 870) | 1.32 | |
| p-value | 0.2672 | |
| Heteroskedasticity | ||
| Breusch-Pagan/Cook-Weisberg χ2(1) | 0.18 | |
| p-value | 0.6731 | |
| Normality | ||
| Skewness and Kurtosis χ2(2) | 0.1355 | |
| p-value | 0.125 |
a Adjustment made according to Kennedy (1981). *, ** and *** are 10, 5 and 1 percent significance levels.