get.equ: Reads equivalence table created in Conquest analysis.

In weirichs/eatModel: Educational Assessment Tools for IRT Modeling using Conquest or TAM

Reads equivalence table created in Conquest analysis.

Description

Reads Conquest files comprising equivalence tables for MLE or WLE parameters.

Usage

get.equ(file)

Arguments

file	Character string with the name of the Conquest equ file (This file is requested using the "equivalence" statement in the conquest syntax file).

Value

A list of n+1 elements, with n the number of dimensions in the analysis. Each element is a data frame, whose name corresponds to the name of the dimension the values belongs to. All data frames except the last one give the transformation of each possible raw score to the WLE or MLE score including its standard error. First column in each data frame contains the raw score, second column the transformed WLE or MLE score, third columns its standard error. The last element of the list give some sparse information about the model specifications.

References

See pp. 162 of Wu, M.L., Adams, R.J., Wilson, M.R., & Haldane, S.A. (2007). ACER ConQuest Version 2.0. Generalised Item Response Modeling Software. Camberwell, Victoria: ACER Press.

Examples

file <- system.file("extdata", "twodim.equ", package = "eatModel")
equ  <- get.equ(file)

weirichs/eatModel documentation built on Jan. 26, 2025, 4:01 p.m.