Chapter 18 - Generalised Linear Modelling

Question 1

What is an explanatory variable?

Answer 1

Inputs into a model that are expected to influence the response variable

Question 2

What is a response variable?

Answer 2

Outputs from the modelbhat are likely to be affected by the explanatory variables

Question 3

Drawbacks of the normal model for multiple regression? (4)

Answer 3

1. Assumes response variable has normal distribution
2. Normal distribution has constant variance which may not be appropriate
3. Adds together the effects of different explanatory variables, but this is often not what is observed
4. Becomes long-winded with more than 2 explanatory variables