Exam MAS-I Practice Question 121
Study guide: Exam MAS-I
A modeler fits a gamma GLM with a log link to claim severity, using driver age, vehicle class and territory as predictors, and then draws a marginal model plot against driver age.
Which description of that plot, and of how it is read, is correct?
- A) Residuals against driver age; a band with no pattern around zero means the mean is specified correctly
- B) Severity against driver age, with one smooth of the data and one of the fitted values; good fit where they coincide
- C) Severity adjusted for the other predictors against driver age adjusted likewise; its slope is driver age's coefficient
- D) Ordered residuals against quantiles of the assumed distribution; a straight line means the distribution is right
- E) Driver age's fitted component plus the residuals, against driver age; its curve shows the transformation driver age needs
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