Multiple regression: assumptions Flashcards
1
Q
What do assumptions tell us?
A
- How valid are the findings of our model?
- Is our model biased?
2
Q
What is multicollinearity?
A
When predictor variables are correlated with each other (this is bad!)
3
Q
What is a positive residual?
A
- higher score than is predicted by the equation
- Underestimate
4
Q
What is a negative residual?
A
- Lower score than is predicted by equation
- Overestimate
