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In: Statistics and Probability

What is the danger in using stepwise regression? What is the difference between Cook’s Distance and...

  1. What is the danger in using stepwise regression?
  2. What is the difference between Cook’s Distance and DFFITS?
  3. What can you do to remove multicollinearity?
  4. What is a VIF?
  5. If you have to create dummy variables for the seven continents of the world, how many columns do you create and why?
  6. Why do we standardize residuals?
  7. Describe a QQ plot and what it can tell us.

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