Simulated item pool example. — items

A data.frame containing 209 calibrated items with different categorical and metric properties, comparable to an item pool from a large-scale assessment.

Usage

items_lsa

Format

A data.frame .

testlet: Testlet identifier (items in the same testlet share a common stimulus.
item: Item identifier.
level: Competence level.
format: Item format.
frequency: Solution frequency.
infit: Item infit.
time: Average response time in seconds.
anchor: Is the item an anchor item?