Question

8.3.3 quiz: nonlinear models
by visual inspection, determine the best - fitting regression model for the data plot below.
a. linear
b. no pattern
c. quadratic

Explanation:

A linear model would show a straight - line trend. A quadratic model has a parabolic (U - shaped or inverted U - shaped) trend. In the given data plot, the data points follow a U - shaped (parabolic) trend. A model with no pattern would have data points scattered randomly with no discernible trend.

Answer:

C. Quadratic