Evaluate models developed using an extended linear model approach.

Free CAS MAS-I (Modern Actuarial Statistics I) lesson in Extended Linear Models. 15 min read, ~2,178 words.

Deviance measures lack-of-fit; scaled deviance is approximately when the model is correct. AIC and BIC; lower is better, BIC penalizes complexity harder once. Likelihood ratio test for nested GLMs:. Pearson far from 1 signals over- or under-dispersion; if, refit with dispersion estimated or switch family. Validate out-of-sample: train/test split or...

What this lesson covers

• Content
• Example 1
• Example 2
• Common Mistakes
• Key Takeaways
• Exam Shortcuts

Learning objectives

• C3

Browse all free MAS-I lessons or jump into free MAS-I practice questions.