The Coefficient of Determination R² Cannot Be Used to Compare

question 85

Multiple Choice

The coefficient of determination R² cannot be used to compare the linear and quadratic models, because

• A) the quadratic model has one parameter more to estimate.
• B) the quadratic model has two parameters more to estimate.
• C) the quadratic model always has a lower R².
• D) R² is not defined for the quadratic model.

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