plot.cond.exp: Plots of the conditional expected scores for polytomous item

In cswells1/MeasInv: Collection of Methods to Detect Dichotomous and Polytomous Differential Item Functioning (DIF)

Description

Plots of the conditional expected scores for polytomous item

Usage

plot.cond.exp(data, group, item, focal.name, ref.name, anchor)

Arguments

data	numeric: either the data matrix only, or the data matrix plus the vector of group membership.
group	factor: the vector of group membership
item	numeric or character: either the number or the name of the single item for which the plots of conditional expected scores are plotted
focal.name	numeric or character: a single value
ref.name	numeric or character: a single value
anchor	numeric: a vector of integer values specifying which items are currently considered as anchor (DIF free) items.

Value

the plots of conditional expected scores for polytomous items in the reference group and in the focal group.

cswells1/MeasInv documentation built on Dec. 19, 2021, 7 p.m.