Summary/Discussion

In a previous analysis using the Curve Estimation procedure, you saw that the Quadratic model may not be appropriate because it suggests that increased advertising will eventually decrease sales.

Using the Nonlinear Regression procedure, you have constructed an asymptotic regression model for the relationship between sales and advertising. A little more work is required to specify a nonlinear regression, but the resulting model has an excellent model fit, good residuals, and interpretable parameters.

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