Actuarial Notes

CAS Exam MAS-I Fall 2019, Question 40

Study guide: Exam MAS-I

You have p = 10 independent variables and would like to select a linear model to fit the data using the following two procedures:

  • Best Subset Selection (BSS)
  • Forward Stepwise Selection (FSS)

Let N_i be the maximum number of models fit by model selection procedure, i.

Calculate the ratio \dfrac{N_{FSS}}{N_{BSS}}.

  • A) Less than 0.005
  • B) At least 0.005, but less than 0.010
  • C) At least 0.010, but less than 0.050
  • D) At least 0.050, but less than 0.100
  • E) At least 0.100

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