getCqItanalFacility {conquestr}

getCqItanalFacility

Description

returns an item facility for each item in itanal object created by ACER ConQuest. For a dichotomously scored Rasch-like item, facility is the percent correct. For a polytomously scored item, or with estimated scores, facility is given by: the sum of the number of cases in each response category, multiplied by the score for that category divided by the sum of all cases responding to the items times the maximum score for the item.

Usage

getCqItanalFacility(itan)

Arguments

itan

A list of class "cqItanal" created by conquestr::getCqItanal()

Value

A list.

Examples

mySys <- ConQuestSys()
myItan <- getCqItanal(mySys)
getCqItanalFacility(myItan)