Data.Qrefine: Example dataset used for the 'Qrefine' function

Description Usage Format

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

1

Format

The format is: List of 5 elements.


NPCD documentation built on Nov. 16, 2019, 1:08 a.m.

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