| metadata_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_example
A data frame with 10 rows and 10 variables:
Unique item identifier, integer.
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.
Item set ID–initial, unique item set name.
Item set ID–modified, unique item set name.
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.