perturbDelta

When probabilities are perturbed, the item difficulties may need to be updated
to be location where p = 0.5

internal

Extends 'ACER ConQuest' through a family of functions
designed to improve graphical outputs and help with advanced analysis
(e.g., differential item functioning). Allows R users to call
'ACER ConQuest' from within R and read 'ACER ConQuest' System Files
(generated by the command `put` <https://conquestmanual.acer.org/s4-00.html#put>).
Requires 'ACER ConQuest' version 5.29.5 or later.
A demonstration version can be downloaded from <https://shop.acer.org/acer-conquest-5.html>.

Dan Cloney

conquestr

An R Package to Extend 'ACER ConQuest'

Ray Adams

perturbDelta function

<dl><dt>myAbilities</dt>
<dd>A matrix of perspon abilities.</dd>
<dt>myItems</dt>
<dd>A vector of item deltas.</dd>
<dt>myProbs</dt>
<dd>A matrix of response probabilities from n persons * i items.</dd></dl>

Arguments

perturbDelta — perturbDelta

<dl>

<dt>myAbilities</dt>
<dd>A matrix of perspon abilities.</dd>


<dt>myItems</dt>
<dd>A vector of item deltas.</dd>


<dt>myProbs</dt>
<dd>A matrix of response probabilities from n persons * i items.</dd>

</dl>

perturbDelta: perturbDelta

Description

Usage

Value

Arguments

Examples