items_vera {eatATA}

Small artificial item pool example.

Description

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

Usage

items_vera

Format

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.