POLS626

Exercises

Diagnostics

Use the Cars.sav data set and complete the following:

1. Perform the OLS model below.

DV: mpg

IVs: engine

weight

accel

cylinder

2. Check for ourliers

3. Check for multicollinearity

4. Check for heteroskedasticity

5. Check if the model is correctly specified

6. Check for autocorrelation