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In the goodness-of-fit measures, interpret the coefficient of determination for Earnings with Model 3 and what the sample variation of earnings explains.
| Model 1 | Model 2 | Model 3 | |
| Standard error of the estimate Se | 6,648.6753 | 5,430.0734 | 5,834.7554 |
| Coefficient of determination R2 | 0.9597 | 0.3501 | 0.7005 |
| Adjusted R2 | 0.6243 | 0.8442 | 0.4045 |
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