3/1/2013

See Chpt4, Sec 4.3.ppt

• Identifying unusual residuals and influential points
  • Standardized residuals
  • Studentized residuals
  • Leverage
  • Cook's distance\
  • dffits
  • dfbetas

Problem Session

• All Subsets Regression Handout
• Permutation Test for Correlation Handout

R LAB

• Identify unusual and influential points in the perch data and the StateSAT data.
• Use best subsets and stepwise regression to identify the best model for predicting winning percentage for MLB teams in MLB2007Standings. (See Exercise 4.3 on p. 209.)

Please complete your reading of Chapter 4 for Monday. Have a great break!