| Variable | Coefficient | Std. Error | t-Value | p-Value | 95% Confidence Interval |
| Formulation | −7.4213 | 3.2354 | −2.29 | 0.032 | −14.1311 to −0.7115 |
| _constant | 15.9918 | 2.2878 | 6.99 | 0.000 | 11.2472 to 20.7363 |
| Number of obs = 24. Model Statistics: F-statistic (Prob > F): 5.26 (p = 0.0317); R-squared: 0.1930; Adjusted R-squared: 0.1563; Root MSE: 7.9251. | |||||
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