Statistics 343

Applied Linear Statistical Methods

Autumn 1998

Last modified by RT: Thu, Dec 24, 1998 1:08 PM

General course information

Course announcement
Frequently asked questions about the course
Frequently Asked Stata Questions
Course meeting schedule [updated 9-Oct]
Notation sheet [updated 1-Nov]
Extra course software [updated 1-Nov]

Updates, Comments, Corrections

24-Dec Final grades have been posted on the web. See Final Exam.
22-Dec Final exams have been graded and distributed to student mailboxes.
14-Dec Homework 6 has been graded and distributed to student mailboxes.
7-Dec Computer transcript on model selection has been posted.
3-Dec Final Exam questions have been posted. See Exams.
24-Nov Information on the time and format for the Final Exam has been posted. See Exams.
24-Nov Homework 6 problem set can now be downloaded. See Homework.
21-Nov Computer transcript (with graphs) from lecture on Box-Cox analysis available on the website. See Handouts.
16-Nov Homework 3 scores have been posted. See Homework.
9-Nov Reminder: Class does not meet on Wednesday or Friday (11 and 13 November).
9-Nov A handout describing some aspects of the snow-pea data set from HW4 is available for viewing or downloading. See Homework.
2-Nov A handout showing computations for Section 4.3 of Weisberg (lack of fit with replications) can be viewed on the web.
1-Nov IMPORTANT NEWS: The statistics department computer AITKEN now has a 15-user Stata license. This should make it possible for statistics students to use Stata directly from X-terminals or comparably equipped workstations.
1-Nov There is a detailed description of WLS and Stata available in a handout I have prepared. This describes a new Stata command that you can use to do WLS, but you have to download it to your computer first.
30-Oct Handout from Stata Reference Manual on weighted regression is available.
There is a stack of them in Eckhart 110, on the tray underneath the mail boxes.
16-Oct A table with commonly used abbreviations and notation used in class has now been added to the website.
Use the new link in "General course information" above.

Handouts and Examples

Computer Transcripts:
The annotated versions have been edited, revised, and enhanced. The "plain" version is exactly what was recorded in class. The "annotated" versions are web-viewable files with the graphics included, often with additional explanatory comments.

Date	Versions	Title
05-Oct-98	[Plain] [Annotated]	Forbes data from ALR
09-Oct-98	[Plain] [Annotated]	Big Bang
12-Oct-98	[Plain] [Annotated]	Finish Big Bang; AFP screening test
19-Oct-98	[Plain] [Annotated]	Snake River Watershed
20-Nov-98	[Plain] [Annotated]	Stata tools for analysis of transformations
07-Dec-98	[Plain] [Annotated]	Model Selection (SAT scores by state)

Index of Printed Handouts:
- 5-Oct: Course announcement, Schedule, Homework 1
- 9-Oct: None
- 12-Oct: None
- 14-Oct: None
- 16-Oct: Least-squares geometry; Notation sheet
- 19-Oct: None
- 21-Oct: None
- 26-Oct: None
- 28-Oct: 100-Meter Dash Extended Analysis (pdf format)
- 30-Oct: Stata manual pages describing weighted regression (available in Eck 110)
- 2-Nov: None
- 4-Nov: None
- 6-Nov: None
- 9-Nov: Homework 5, chromatography article (PDF format), three pages on thin-layer chromatography (Xerox)
- 16-Nov: None
- 18-Nov: None
- 20-Nov: None
- 22-Nov: None

Web-based handouts

Date	Versions	Title
28-Sep-98	[HTML] [PDF]	How to write up a data analysis report: Template and guidelines for report preparation
28-Sep-98	[HTML] [PDF]	How to write up a data analysis report: A sample data analysis report
21-Oct-98	[HTML] [PDF]	Frequently asked Stata questions (FAQ-Stata)
1-Nov-98	[HTML] [PDF]	Weighted Least Squares using Stata
2-Nov-98	[HTML] [PDF]	Assessing Lack of Fit using Replications with Stata
9-Nov-98	[HTML] [PDF]	Some Notes on Analyzing Galton's Snow Pea Data
9-Nov-98	[HTML] [PDF]	Thin-Layer Chromatography article

What you need to know about computing in this course

Homework due date policy

All homework assignments are due at the close of business on the due date, not the end of the class period, if any, on that day.

Homework can be submitted by
-- leaving it in Thisted's box in AMB-B200 by 4:30 pm, or
-- leaving it in his box in Eckhart 110 by 5:00 pm, or
-- slipping it under his door at Eckhart 126 by 5:00 pm.

Homework Assignments

If Acrobat Reader or Acrobat Exchange is not already installed on your computer, you will need to

download Adobe Acrobat to view and print homework solutions in PDF format. Select the version appropriate to the computer you are using.

Homework 1 Due Fri 8-Oct-98.
Distribution of scores
Homework 2 Due Mon 18-Oct-98.
Notes on Homework 2 -- 100-Meter Dash Data extended data analysis (Adobe PDF version) Distribution of scores
Homework 3 Due Mon 25-Oct-98.
Homeworks have been graded and distributed. There is a key to RT's comments, which you should consult in order to understand the notes made on your homework papers.
Distribution of scores
Homework 4 Due Fri 6-Nov-98.
Notes on Homework 4 -- Galton's snow peas data analysis (Adobe PDF version)
Distribution of scores
Homework 5 Due Mon 16-Nov-98.
Distribution of scores
Homework 6 Due Fri 4-Dec-98.
Distribution of scores

Examinations

Final Exam
The final examination is a take-home exercise consisting of two data analysis problems. The write ups for these problems are due Monday, 14 December, 1998.
- Final examination problems.
- Data sets and resources for final examination
  1. Cigarette data
  2. Housing data
- Distribution of scores
Course Grades
- Summary of final course grades, and individual grades (coded)

Miscellaneous

Data Sets
Abbreviations used below: [Doc] Documentation of data set, [Data] raw data set in ASCII (text) format, [.dct] ascii data set with Stata dictionary information appended, [.dta] Stata file containing the data set. If Stata has problems reading the raw data set as downloaded by your browser, try downloading using [M] if you are using a Macintosh, or [W] if you are using a Windows computer to run Stata.
- [Doc] [Data] [.dta] -- case0701.asc: Distances and recession velocities of extra-galactic nebulae (Hubble, 1929)
- [Doc] [Data] [.dta] -- phenol.raw: phenol data, from Baum and Shanks (1975)
- [Doc] [Data] [.dta] -- 44d.raw: 4,4'-diphenylolpropane data, from Baum and Shanks (1975)
- [Doc] [Data] [.dta] -- Alpha fetoprotein data set (Thisted)
- [Doc] [Data] [.dta] -- Cigarette Data
Software
- wls.ado A Stata ado file for weighted least squares.
  (If you have trouble using this file on a non-Unix computer, try downloading the file using ftp in TEXT (not BINARY) mode from galton.uchicago.edu. The file is found in the directory /pub/thisted/343/software/.
- bic.do A Stata do file for calculating Schwarz's BIC after a regress or fit command. To use this file, it should be in the current Stata working directory. The command is "run bic"
  (If you have trouble using this file on a non-Unix computer, try downloading the file using ftp in TEXT (not BINARY) mode from galton.uchicago.edu. The file is found in the directory /pub/thisted/343/software/.

People

You are encouraged to speak to the instructor or the course assistant about any aspect of the course. Feedback from you is important to us. The best way to contact the instructor or the course assistant is via electronic mail, but you may also call us or stop by during office hours.

Instructor:
Ronald Thisted (thisted@galton.uchicago.edu)
Eckhart 126, 2-8332, Office Hours: To be announced.
Billings Hospital B226B.
To make an appointment, call Tina Delaney (4-1834) M-Th, 7:30-5:00. Be sure to tell her that you are a Stat 343 student, and indicate whether you prefer to meet with me in Eckhart Hall or in the Medical Center.

Course Assistant:
Zafiris Spyropoulos

Stat 343 Aut 98