CAS Exam MAS-I Fall 2018, Question 36
Study guide: Exam MAS-I
A modeler creates a local regression model. After reviewing the results, the fitted line appears too wiggly, over-responding to trends in nearby data points. The modeler would like to adjust the model to produce more intuitive results.
Determine which one of the following adjustments the modeler should make.
- A) Add a linear constraint in the regions before and after the first knot
- B) Increase the number of orders in the regression equation
- C) Increase the number of knots in the model
- D) Reduce the number of knots in the model
- E) Increase the span,
s, of the model
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