Small artificial item pool example. — items

A data.frame containing 80 items with different categorical and metric properties.

Usage

items_vera

A data.frame .

item: Item identifier.
exclusions: Items which can not be in the same test form.
time: Average response times in minutes. 2.5 equals 2 minutes and 30 seconds, for example.
subitems: Number of sub items.
MC, CMC, short_answer, open: Answer formats.
diff_1, diff_2, diff_3, diff_4, diff5: Difficulty categories.