summary {irtQ}R Documentation

Summary of Item Calibration Results

Description

This S3 method summarizes the IRT calibration results from an object of class est_irt, est_mg, or est_item, which are returned by the functions est_irt(), est_mg(), and est_item(), respectively.

Usage

summary(object, ...)

## S3 method for class 'est_irt'
summary(object, ...)

## S3 method for class 'est_mg'
summary(object, ...)

## S3 method for class 'est_item'
summary(object, ...)

Arguments

object

An object of class est_irt, est_mg, or est_item.

...

Additional arguments passed to or from other methods (currently not used).

Value

A list of internal components extracted from the given object. In addition, the summary method prints an overview of the IRT calibration results to the console.

Methods (by class)

Author(s)

Hwanggyu Lim hglim83@gmail.com

See Also

est_irt(), est_mg(), est_item()

Examples


# Fit the 1PL model to LSAT6 data and constrain the slope parameters to be equal
fit.1pl <- est_irt(data = LSAT6, D = 1, model = "1PLM", cats = 2, fix.a.1pl = FALSE)

# Display the calibration summary
summary(fit.1pl)



[Package irtQ version 1.0.0 Index]