Description Usage Arguments Author(s) References See Also Examples
A plotting function producing non-parametric analogues of the IRF for each option in a multiple choice item not unlike those in Jim Ramsay's TestGraf program.
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choices |
A matrix of responses to multiple-choice
items: persons as rows, items as columns. As a rare
exception in |
key |
A vector containing the key (correct answers)
to the items in |
item |
A single number pointing to the item (column
of |
main |
The main title of the plot, given that
|
co |
The colour of the curves. Default is 1 for
black. Use |
label |
When |
Ivailo Partchev
James O. Ramsay (2000). TestGraf: A program for the graphical analysis of multiple choice test and questionnaire data. McGill University, Montreal, Canada
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