items_diao {eatATA} | R Documentation |
Small simulated item pool example.
Description
A data.frame
containing 165 items calibrated using a 3PL model. This item pool is analogous to one of the item pools used
in Diao & van der Linden (2011).
Usage
items_diao
Format
A data.frame
.
- item
Item identifier.
- a
Discrimination parameter.
- b
Difficulty parameter.
- c
Pseudo-guessing parameter.
- category
Content category.
References
Diao, Q. & van der Linden, W.J. (2011). Automated test assembly using lp_solve version 5.5 in R. Applied Psychological Measurement, 35 (5), 398-409.
[Package eatATA version 1.1.2 Index]