Topic: Choosing and Explaining Nonlinear Forms

Workshop: Choosing a Curve for a Dose-Response Pattern

Using Out-of-Sample Error to Choose Curve Shape

Separating Curvature from Changing Spread

Showing Data Support Alongside a Nonlinear Fit

Residual Patterns That Signal Missing Curvature

Reporting a Nonlinear Form Choice and Its Limits

Recognizing Overfit Wiggles in Flexible Curves

Plotting Uncertainty Bands Around a Fitted Curve

Pointwise Bands Versus Whole-Curve Uncertainty

Overlaying Candidate Curves on the Data