subscore.x | R Documentation |
This function estimates true subscores based on observed total scores using the method introduced by Haberman (2008) <doi:10.3102/1076998607302636>.
subscore.x(test.data)
test.data |
A list that contains item responses of all subtests and the entire test, which can be obtained using function 'data.prep'. |
summary |
Summary of obtained subscores (e.g., mean, sd). |
PRMSE |
PRMSEs of obtained subscores (for Haberman's methods only). |
subscore.original |
Original observed subscores and total score. |
subscore.x |
Subscores that are estimated based on the observed total score. |
Haberman, S. J. (2008). "When can subscores have value?." Journal of Educational and Behavioral Statistics, 33(2), 204-229.doi:10.3102/1076998607302636
test.data<-data.prep(scored.data,c(3,15,15,20), c("Algebra","Geometry","Measurement", "Math")) subscore.x(test.data) subscore.x(test.data)$summary subscore.x(test.data)$PRMSE subscore.x(test.data)$Correlation subscore.x(test.data)$Disattenuated.correlation subscore.x(test.data)$subscore.x
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