Re: [Gretl-users] wooldridge data
On Fri, 12 Jan 2007, Sven Schreiber wrote:
I just noticed that for the 2nd edition of Wooldridge's
Introductory Econometrics there's a gretlfiles.zip archive
freely available online at
http://www.thomsonedu.com/aise/economics/wooldridge_2e_datasets/
Hmm, I hadn't noticed that. The zipfile seems to contain old
versions of the gdt files that I sent the publisher a few years
ago; I don't think they put them up at that time. There are some
fixes in the versions of the files at
http://gretl.sourceforge.net/gretl_data.html
(and these have the advantage of being in self-installer form for
Windows or .tar.gz for Linux).
And for the current 3rd ed there are "only" ascii files,
but also free
downloads
(http://www.thomsonedu.com/aise/economics/wooldridge3e_AISEdatasets/)
I'm thinking of converting them into native gretl files (maybe let
students do it as an exercise ;-). Again, are there any issues with
posting them online, or even including them with gretl? I mean they
didn't cook up the data, so it seems like public domain to me, but IANAL
(no lawyer).
I've corresponded with Wooldridge before, and he had no objection
to my packaging the data files for gretl. I've taken a quick look
at the 3e zipfiles and most of the data seem to be same as in the
previous edition (there may be one or two novelties).
If you decide to make an updated package, you might want to try
using the Stata files as a basis rather than the plain text ones.
Gretl's Stata importer is quite decent (thanks to R, I should
mention), and descriptive strings for the variables should come
across OK.
Allin.