summary {irtQ}

Summary of item calibration

Description

This method function summarizes the IRT calibration results of est_irt or est_item object.

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 or est_item.

...

Further arguments passed to or from other methods.

Value

The method function returns a list of internal objects extracted from est_irt or est_item object and displays a summary of the IRT calibration results on the console panel.

Methods (by class)

• est_irt: An object created by the function est_irt.

• est_mg: An object created by the function est_mg.

• est_item: An object created by the function est_item.

Author(s)

Hwanggyu Lim [e-mail]

See Also

est_irt, 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)

# summary of the estimation
summary(fit.1pl)