| metadata_withreplic_example {ata} | R Documentation |
ATA Package Example Item Metadata with Item Replications
Description
Sample data based on data from Parshall et al. (2002) used for the demonstration of the Weighted (positive) Deviations Method (WDM).
Usage
metadata_withreplic_example
Format
A data frame with 14 rows and 10 variables:
- Item
Unique item identifier, integer.
- Item2
Unique item identifier, character letter.
- Content
Content label, as factor identifying content "A" and "B".
- Content_A
Dummy code for content "A", 0 and 1 indicators.
- Content_B
Dummy code for content "B", 0 and 1 indicators.
- p
Item proportion correct responding, rounded decimal.
- rpbis
Item-total point biserial correlation, rounded decimal correlation in range -1.00 to 1.00.
- iSx
Item contribution to total composite standard deviation, double precision numeric.
- Time
Expected item response time, in minutes.
- Orig_Item
Original item copy, corresponding "Item" column ID.
References
Parshall, C. G., et al. (2002). Automated test assembly for online administration. In C. G. Parshall, J. A. Spray, J. C. Kalohn, & T. Davey, Practical considerations in computer based testing (pp.106-125). New York, NY: Springer-Verlag New York, Inc.