kft5 {pairwise} | R Documentation |
Data for 300 subjects answering to 5 dichotomous items out of 'Kognitiver Fähigkeits Test' [Cognitive Skills Test] (KFT - Gaedike & Weinläder, 1976) . This data is used as an example in the textbook by J. Rost (2004) to demonstrate some principles of rasch measurement.
data(kft5)
A "matrix"
containing 5 columns (variables) and 300 rows (obsevations).
The instrument KFT and the data are described in Rost (2004) at page 95.
Rost, J. (2004). Lehrbuch Testtheorie - Testkonstruktion (2 nd Ed.) Huber: Bern.
Heller, K, Gaedike, A.-K & Weinläder, H. (1976). Kognitiver Fähigkeits-Test (KFT 4-13). Weinheim: Beltz.
data(kft5) dim(kft5) ########### # frequencies ftab(kft5) # Itemparameter to be compared with Rost (2004), page 120. summary(pair(kft5)) # Itemparameter to be compared with Rost (2004), page 120. summary(pers(pair(kft5)))