summary.ceqclist function

Summarizing a List of Estimated Chain Equating Coefficients

summary method for class ceqclist.

## 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.

Returns

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"))