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.