Computing Subscores in Classical Test Theory and Item Response Theory

Documentation for package ‘subscore’ version 3.3

CTTsub	This main function estimates true subscores using different methods based on original CTT scores.
data.prep	This function prepares data into a required list format
scored.data	Sample scored data
subscore.corr	Computing correlation indices for subscores and the total score.
subscore.s	Computing subscores using Haberman's method based on observed subscores.
subscore.sx	Computing subscores using Haberman's method based on both observed total scores and observed subscores.
subscore.Wainer	Estimating true subscores using Wainer's augmentation method
subscore.x	Computing subscores using Haberman's method based on observed total scores.
test.data	A list of objects that include both test information and subscores.
TIMSS11G8M.data	The 2011 TIMSS Grade 8 Mathematics Assessment Dataset
Yen.OPI	Estimating true subscores using Yen's OPI
Yen.Q3	Computing Yen's Q3 statistic for unidimensional Rasch, 1-, 2-, and 3-PL logistic IRT models