Science | R Documentation |
A 4-item data set borrowed from ltm
package in R, first example
of the grm()
function. See more complete documentation therein, as
well as Karlheinz and Melich (1992).
Phil Chalmers rphilip.chalmers@gmail.com
Karlheinz, R. and Melich, A. (1992). Euro-Barometer 38.1: Consumer Protection and Perceptions of Science and Technology. INRA (Europe), Brussels. [computer file]
## Not run:
itemstats(Science)
mod <- mirt(Science, 1)
plot(mod, type = 'trace')
## End(Not run)
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