CTTsub.RegOnTotSub: This function Computes subscores based on both the observed subscore and the observed total in classical test theory (CTT)
score
Description
This function computes CTT subscores based on both the observed subscore and the observed total
score, using the method introduced in Haberman (2008), Haberman et al. (2009), and Sinharay (2010), which return:
(1) Original Observed subscore;
(2) The true subscore is estimated based on
both the observed subscore and the observed total score.
Usage
CTTsub.RegOnTotSub(test.data)
Arguments
test.data
A list that contains datasets of all subtests and the whole test,
which can be obtained using function 'data.prep'.
Value
A list of objects that include both test information and subscores.
(1) "subscore.information" - It contains test information of both subtests
and the total test, such as mean of subscores and total score, reliability, and PRMSE.
(2) "subscore.original" - It contains original subscores and total score.
(3) "subscore.RegOnTotSub" - It contains subscores that are estimated based on both the observed subscore and the
observed total score.