summary.ceqclist: Summarizing a List of Estimated Chain Equating Coefficients

In equateIRT: IRT Equating Methods

Summarizing a List of Estimated Chain Equating Coefficients

Description

summary method for class ceqclist.

Usage

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

## S3 method for class 'summary.ceqclist'
print(x, ...)

Arguments

object	an object of the class ceqclist returned by function chainec.
path	a vector of character strings with the names of the forms that constitute the path separated by a dot (e.g. "test1.test2.test3").
x	an object of class summary.ceqclist, a result of a call to summary.ceqclist.
...	further arguments passed to or from other methods.

Value

The function summary.ceqclist returns a list containing the output of function summary.ceqc for each path contained in object.

Author(s)

Michela Battauz

See Also

chainec, modIRT, summary.eqc

Examples

# the following code uses item parameter estimates previously obtained
# for examples that start from item response data see function modIRT

# two-parameter logistic model
# direct equating coefficients using the "Haebara" method
data(est2pl)
test<-paste("test", 1:5, sep = "")
mod2pl <- modIRT(coef = est2pl$coef, var = est2pl$var, names = test, display = FALSE)
direclist2pl <- alldirec(mods = mod2pl, method = "Haebara")
# compute all chain equating coefficients of length 3
chainec3 <- chainec(r = 3, direclist = direclist2pl)
summary(chainec3)	
summary(chainec3, path = "test1.test2.test3")	
summary(chainec3, path = c("test1.test2.test3","test1.test5.test4"))	

equateIRT documentation built on June 8, 2025, 1:12 p.m.