subscore.sx | R Documentation |
This function estimate true subscores based on both observed total scores and observed subscores using the method introduced by Haberman (2008) <doi:10.3102/1076998607302636>.
subscore.sx(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.sx |
Subscores that are estimated based on both the observed total score and observed subscore. |
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.sx(test.data) subscore.s(test.data)$Correlation subscore.s(test.data)$Disattenuated.correlation subscore.sx(test.data)$summary subscore.sx(test.data)$PRMSE subscore.sx(test.data)$subscore.sx
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