everyone should always use the newest versions of everything (R, packages,
etc.). there may be coding errors that are continually being fixed, so make
sure you update.
On Fri, Apr 10, 2009 at 2:30 PM, Bernard L. Fraga <bfraga at fas.harvard.edu>wrote:
Quick Question,
For #3 on the Problem Set, different version numbers in R generate
different L1 values. I know that we were told to install the newest
version (2.8.1), but some of us are apprehensive about updating our
versions of R. If we use the older version of R, will it make a
difference for any of our reported estimates when we use the MatchIt
and cem packages? Should we all install the new version now before
continuing with the problem set?
Thanks in advance.
-Bernard
-----------------------
Bernard L. Fraga
Ph.D. Student, Harvard University
Government and Social Policy
bfraga at
fas.harvard.edu
-----------------------
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