BOSTON COLLEGE
Department of Economics
EC 228 02 Econometrics, Prof. Baum, Mr. Barbato, Spring 2003
Problem Set 4
Due at classtime, 14 March 2003 (rescheduled)
Problem sets will not be accepted after their due dates.
Please make sure your name is legible on each page of your answers.
- Problem 6.6
- Problem 6.7, using the 401K-50 dataset rather than the 401K dataset
- Problem 6.9
- Problem 6.12
- Problem 6.16 (typo: part ii should read 'actually reduce points')
- Problem 7.3, using the GPA2-20 dataset rather than the GPA2 dataset
- Problem 7.8
- Problem 7.11
For some these problems, you must use Stata, but will not make use of the
RAW files listed in the text, as all of these data are available in Stata format over
the Internet. Please consult the "Wooldridge datasets: descriptions and access commands"
link on the course home page. All you need to do is copy the "use http://fmwww..." line
from each dataset to be used into Stata's command window. The name of each dataset is
that given in the text, without the .RAW extension; e.g. BWGHT.RAW is referred to as
just BWGHT (with no period nor extension). For example,
. use http://fmwww.bc.edu/ec-p/data/wooldridge/bwght
For each of the empirical problems, hand in a printout from Stata, annotated with your comments.
The "log" icon in the Stata toolbar may be used to create a file containing both your commands and Stata's
response. It may be easier to work with a text-format log; the command 'log using ps2.log' will create a
text log. Use the 'Viewer' within Stata to examine and print the log.
All Stata problems in this problem set may be performed with Small Stata (which has
a limit of 1,000 observations) as well as Intercooled Stata (available in the SLSC). Either Version
7 or Version 8 of Stata may be used.