if-a-residual-plot-displays-a-clear-curved-pattern-what-does-this-indicate-about

Question

If a residual plot displays a clear curved pattern, what does this indicate about the suitability of a linear regression model?

Accepted Answer

A linear model may not be appropriate; a nonlinear relationship may exist.

Answer

The linear model is a perfect fit.

Answer

The residuals are all positive.

Answer

The data has no relationship.