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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
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