equateIRT (version 2.5.1)

summary.eqclist: Summarizing a List of Estimated Direct Equating Coefficients

Description

summary method for class eqclist.

Usage

# S3 method for eqclist
summary(object, link, ...)
# S3 method for summary.eqclist
print(x, ...)

Value

The function summary.eqclist returns a list containing the output of function summary.eqc for each link contained in object.

Arguments

object

an object of the class eqclist returned by function alldirec.

link

a vector of character strings with the names of the two forms being linked separated by a dot (e.g. "test1.test2").

x

an object of class summary.eqclist, a result of a call to summary.eqclist.

...

further arguments passed to or from other methods.

Author

Michela Battauz

See Also

alldirec, modIRT, summary.eqc

Examples

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

# Rasch model
# direct equating coefficients using the "mean-mean" method
data(estrasch)
test<-paste("test", 1:5, sep = "")
modrasch <- modIRT(coef = estrasch$coef, var = estrasch$var, names = test, 
	display = FALSE)
direclistrasch <- alldirec(mods = modrasch, method = "mean-mean", all = TRUE)
summary(direclistrasch)
summary(direclistrasch, link = "test1.test2")
summary(direclistrasch, link = c("test1.test2", "test1.test5"))