Open Access
Table 2.
Coefficients of models A-C and U.
| Model | A | B | C | U |
|---|---|---|---|---|
| Dependent variable | price | ln price | ln price | ln price |
| Quantity (lot size) | −0.0028 (0.003) | −0.000005 (0.000) | −0.000005 (0.000) | |
| (ln) | −0.2076 (0.000) | |||
| Actual alcohol | 0.3472 (0.000) | |||
| (quadratic) | 37.2301 (0.000) | 0.0139 (0.000) | 0.0126 (0.000) | |
| Sugar | −25.0372 (0.000) | |||
| (quadratic) | 0.5061 (0.000) | 0.0001 (0.000) | 0.0001 (0.000) | 0.00005 (0.000) |
| Sugar free extract | 0.0228 (0.000) | 0.0237 (0.000) | 0.0188 (0.000) | |
| Acidity | 185.1998 (0.000) | |||
| pH | −0.5268 (0.000) | −0.5058 (0.000) | −0.2766 (0.000) | |
| constant | −4797 (0.000) | 6.5271 (0.000) | 4.2733 (0.000) | 7.7233 (0.000) |
| adj. R2 | 0.3849 | 0.5076 | 0.5147 | 0.5902 |
| VIF | 3.02 | 1.49 | 1.50 | 1.52 |
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