summary.restscore.class: Summarize restscore.class objects

In vandenman/mokken: Conducts Mokken Scale Analysis

Description

S3 Method for summary of objects of class restscore.class. Summarize checks of nonintersection using method restscore.

Usage

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

Arguments

object	list produced by check.restscore
...	Optional parameters will be ignored

Value

Matrix with ncol(X) rows and 10 columns, showing for each item a summary of the violations of nonintersection using method restscore: itemH = Item-scalability coefficient; #ac = number of active pairs that were investigated; #vi = number of violations in which the item is involved; #vi/#ac = propotion of active pairs that is involved in a violation; maxvi = maximum violation; sum = sum of all violations; zmax = maximum z-value; zsig = number of significant z-values; crit = Crit value (Molenaar and Sijtsma, 2000, pp. 49, 74).

Author(s)

L. A. van der Ark [e-mail]

References

Mokken, R. J. (1971) A Theory and Procedure of Scale Analysis. Berlin, Germany: De Gruyter.

Molenaar, I.W. and Sijtsma, K. (2000) User's Manual MSP5 for Windows [Software manual]. Groningen, The Netherlands: IEC ProGAMMA.

Sijtsma, K, and Molenaar, I. W. (2002) Introduction to nonparametric item response theory. Thousand Oaks, CA: Sage.

Van der Ark, L. A. (2007). Mokken scale analysis in R. Journal of Statistical Software. http://www.jstatsoft.org/v20/i11

See Also

check.restscore, plot.restscore.class

Examples

data(acl)
Communality <- acl[,1:10]
restscore.list <- check.restscore(Communality)
plot(restscore.list)
summary(restscore.list)

vandenman/mokken documentation built on April 12, 2020, 4:06 a.m.