CAS Exam 7 Spring 2015, Question 10
Study guide: Exam 7
Given the following residual graphs from an over-dispersed Poisson (ODP) bootstrap model:
Part a (0.5 points)
For each graph, briefly discuss whether the illustrated residuals demonstrate the presence or absence of heteroscedasticity.
Part b (0.5 points)
Describe why it is important to adjust for heteroscedasticity when using a bootstrap model.
Part c (1 point)
Describe two procedures for adjusting for heteroscedasticity.
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