Hi all,
Jon has just alerted us to a typo in ps 3. In part (b) ii), we
forgot a minus sign. An updated version has been posted to the
website. I've also attached it to this email.
Have a good weekend!
Holger
--
Holger Lutz Kern
Graduate Student
Department of Government
Cornell University
Institute for Quantitative Social Science
Harvard University
1737 Cambridge Street N350
Cambridge, MA 02138
www.people.cornell.edu/pages/hlk23