Transformations, Leverage, and Influential Observations

Weeks 7 and 8: October 9 through October 18

MATH 665 ~ Applied Regression Analysis and Experimental Design ~ Fall 2006

Class meeting schedule and topics

Monday, October 9 ~	Transformations
Wednesday, October 11 ~	Weighted least squares
Monday, October 16 ~	Leverage and influence
Wednesday, October 18 ~	Indicator variables
Monday, October 23 ~	Fall Recess ~ no class

Homework Assignments

11. Due Wednesday, October 11

    Required work

    • Read Chapter 5 on "Transformations and Weighting to Correct Model Inadequacies"
    • Complete the first four tasks in the "Regression Case Study Project" assignment.

12. Due Monday, October 16

    Required work

    • Read Chapter 6 on "Diagnostics for Leverage and Influence"
    • Exercise 5.5 on page 202 and any one of Exercises 5.7, 5.8, and 5.9 on page 203

    Optional work

    • Test 1 revisions (turn in original to receive credit)
    • Exercises 5.1 through 5.4, 5.6, and the other two of 5.7, 5.8, and 5.9

13. Due Wednesday, October 18

    Required work

    • Read Chapter 8 on "Indicator Variables"
    • Any one of Exercises 5.10 and 5.11 on pages 203 through 205

    Optional work

    • The other one of Exercises 5.10 and 5.11, and Exercises 5.12 through 5.16

14. Due Wednesday, October 25

    Required work

    • Read Chapter 9 on "Variable Selection and Model Building"
    • Exercises 8.13 and 8.14 on page 290

    Optional work

    • Exercises 8.1 through 8.11 on pages 287 through 289