| metadata_withreplic_example {ata} | R Documentation |
Sample data based on data from Parshall et al. (2002) used for the demonstration of the Weighted (positive) Deviations Method (WDM).
metadata_withreplic_example
A data frame with 14 rows and 10 variables:
Unique item identifier, integer.
Unique item identifier, character letter.
Content label, as factor identifying content "A" and "B".
Dummy code for content "A", 0 and 1 indicators.
Dummy code for content "B", 0 and 1 indicators.
Item proportion correct responding, rounded decimal.
Item-total point biserial correlation, rounded decimal correlation in range -1.00 to 1.00.
Item contribution to total composite standard deviation, double precision numeric.
Expected item response time, in minutes.
Original item copy, corresponding "Item" column ID.
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.