thurston case 5
John, I installed the psych package and all it's dependencies. Then following the psych manual, I type thurstone(x, ranks = FALSE, digits = 2) the result is Error: could not find function "thurstone" Any suggestions? Best, Jared
John Fox-6 wrote:
Dear Jared,
See ?thurstone in the psych package. RSiteSearch("Thurstone") turns this
up
as the first hit. Also see the BradleyTerry package for the similar
Bradley-Terry model.
Regards,
John
------------------------------
John Fox, Professor
Department of Sociology
McMaster University
Hamilton, Ontario, Canada
web: socserv.mcmaster.ca/jfox
-----Original Message----- From: r-help-bounces at r-project.org [mailto:r-help-bounces at r-project.org]
On
Behalf Of japomani Sent: January-31-09 5:04 PM To: r-help at r-project.org Subject: [R] thurston case 5 Hi, I hope some one can help. I need to compute Thurston's case 5 on a
large
set of data. I have gotten as far as computing the proportional preference matrix but the next math is beyond me. Here us my matrix 0.500 0.472 0.486 0.587 0.366 0.483 0.496 0.434 0.528 0.500 0.708 0.578 0.633 0.554 0.395 0.620 0.514 0.292 0.500 0.370 0.557 0.580 0.615 0.329 0.413 0.422 0.630 0.500 0.783 0.641 0.731 0.663 0.634 0.367 0.443 0.217 0.500 0.351 0.907 0.686 0.517 0.446 0.420 0.359 0.649 0.500 0.325 0.559 0.504 0.605 0.385 0.269 0.093 0.675 0.500 0.625 0.566 0.380 0.671 0.337 0.314 0.441 0.375 0.500 Can someone help me write an R script to compute the Thurston Case 5
values?
The result should be the scale values for each item. I found three web pages that might be useful in this, but again, I didn't know enough to translate them into a result. http://marketing.byu.edu/htmlpages/books/pcmds/THURSTONE.html http://www.personality-project.org/r/thurstone.html http://en.wikipedia.org/wiki/Law_of_comparative_judgment Thanks, Jared -- View this message in context: http://www.nabble.com/thurston-case-5- tp21768835p21768835.html Sent from the R help mailing list archive at Nabble.com.
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View this message in context: http://www.nabble.com/thurston-case-5-tp21768835p21781083.html Sent from the R help mailing list archive at Nabble.com.