Department of Health Studies and Department of Statistics, The University of Chicago

Vanja M. Dukic, Associate Professor, Department of Health Studies

Health Studies 324 / Statistics 224

http://galton.uchicago.edu/~dukic/224-A08/224-A08-web/index.html

 

Homework for Applied Regression


Note: HW is due at the beginning of each class. No late hw will be accepted.

  • HW 1: Please solve: 2.2, 2.3, 2.4, 2.7, 2.10, 2.12

    Note: if in your version of the book the problem 2.10 refe rs to Table 1.11 and exercise 1.10f, that should be changed to Table 2.11 and e xercise 2.10f, respectively.

    Note that exercises 2.7 and 2.10 should be done in Stata. Winfried and Zhou will go over the datasets and how to get them during the Stata sessions next week (the week of Oct 2).

  • Solutions to HW 1


  • HW 2: Please solve 3.1, 3.3, 3.5, 3.11, 3.14

  • Solutions to HW 2





  • HW 3: Please solve the following problems from Chapter 4:
    1 (part a only), 5, 6 (only for items 1,2,3,4,and 6. Note: do parts b and c b y hand!), and 7

  • Solutions to HW 3




  • HW 4:
    Please do the problems: 4, 5, 6, and 7 from Chapter 5.

  • Solutions to HW 4




  • HW 5 (Due Thu 11/20 at 10:30am in Eck 133):
    Please do the problems: 6.2, 6.4, 7.4, and 8.2 .

    Note this HW is due on Thursday, Nov 20. There will be only one more hw left after this one (which will be due by 10:30am on the day of the early bird final, Dec 4)
  • Solutions to HW 5



  • HW 6, due THRUSDAY 12/4/05 at 10:30am in Eck 133:
    Please do the problems: 6.3, 6.5, 8.4, 11.5, 11.8, 12.3

    A couple of notes:
    This HW will count as 1.5 homeworks because it is the largest, and because it is open-ended (think "mini report"). Please use the 2 weeks you have to work on it well, and do a good job. Justify all your reasoning -- and remember, there might be times when there is no right answer!

    The Erie Housing Data (11.5) is a subset of houses, a pretty limited set. There are no houses larger than 4 bedrooms, almost all have garages, and none have two or more bathrooms. Also, most of the houses are old, just two are less than 20 years old. Note that X2 stands for the number of bathrooms: a half bathroom has just a sink and toilet, no shower or tub. Similarly, X5, number of garage stalls: 1.5 means a one car garage with extra storage space (there is no half car!)

    The Cigarette data (11.8) is in chapter 3. The dataset is correct: New Hampshire has much higher sales than anyone else. Alaska is also a high leverage point because of female; the mining-and-adventuring economy of 1970 makes its female % lower than any other state. It still has the lowest female % today (48.3% in 2000). Finally, high school graduate percentages are much higher today than in 1970 -- clearly, things have changed since then.

  • Solutions to HW 6