| Data.Qrefine {NPCD} | R Documentation |
Example dataset used for the Qrefine function
Description
This dataset is a list containing components that can be used for the Qrefine function. The response marix is generated using the DINA model.
$mis.Q: The mis-specified Q matrix. Numerical, 20 (item) by 3 (attribute). Binary values: 1=attribute required by the item, 0=attribute not required by the item.
$true.Q: The true Q-matrix. Numerical, 20 (item) by 3 (attribute). Binary values: 1=attribute required by the item, 0=attribute not required by the item.
$response: The examinee responses to all items, generated using the true Q-matrix. Numerical, 300 (examinee) by 20 (item). Binary values: 1=correct, 0=incorrect.
$true.alpha: The true examinee ability profiles. Numerical, 300 (examinee) by 3 (attribute). Binary values: 1=examinee masters the attribute, 0=examinee does not master the attribute.
$true.par$slip: The true slipping parameters for each item. Numerical, vector of 20.
$true.par$guess: The true guessing parameters for each item. Numerical, vector of 20.
Usage
data(Data.Qrefine)Format
The format is: List of 5 elements.