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Table 3.
Coefficients of models D-E.
| Model | D | E |
|---|---|---|
| Dependent variable | ln price | ln price |
| Quantity (lot size / ln) | −0.2282 (0.000) | −0.2196 (0.000) |
| Actual alcohol (ln) | 3.1771 (0.000) | 3.1426 (0.000) |
| Sugar (ln) | 0.0322 (0.000) | |
| (for white wines – ln) | 0.0624 (0.000) | |
| (for red wines – ln) | −0.0580 (0.000) | |
| Sugar free extract (ln) | 0.8659 (0.001) | 0.8463 (0.000) |
| pH (ln) | −1.6855 (0.000) | −1.0908 (0.001) |
| constant | 0.7224 (0.150) | 0.0620 (0.899) |
| R2 | 0.5390 | 0.5505 |
| VIF | 1.41 | 1.42 |
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