(Note: if there were a real exam--you would want to show your work and give more detailed answers. But since these answers are just to check your own answers, these details are left off.)

**1. **F, T, F, F, any, F, F.**2. **Linearity. X to X^2 or Y to sqrt(Y).**3. **a) More.* b) Any number (5-15).*
* c) Breakfast.*
* d) Outlier.*
**4. **a) Sex.* b) Colinearity.*
* c) 0.16*
* d) p>0.05/2*
* e) 0.0016*
**5. **a) Leverage plots cruch together.* b) imp*sleep*
* c) none.*
* d) If sleep increases from 3 to 7, GPA drops from 3.5 to 3.25. So the rise/run is -.25/4 = .06. (But it is +/- about .3, so there is no significant effect.)*