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describe Comparison of two regression models.

You have been specified a report that presents two regression models with different numbers of independent variables. You don't have the data so you can't re-compute the regression models. Nonetheless you have been asked to determine which model is better. describe how can you reasonably compare them?

1. Use R-square

2. Use Adjusted R-square

3. Use coefficient of determination

4. You cannot compare models with different numbers of independent variables

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