ICC.fun {RM.weights} | R Documentation |
Item caracteristic curves computation and plotting under CML.
Description
Computation and plotting of item caracteristic curves (ICCs) under conditional maximum likelihood (CML).
Usage
ICC.fun(b, plot = FALSE)
Arguments
b |
Item severity vector estimated under CML. |
plot |
Logical. If |
Value
icc | Matrix of item characteristic curves. Coloumns are items and rows are severity levels. |
Author(s)
Sara Viviani sara.viviani@fao.org
See Also
Examples
data(data.FAO_country2)
# Questionnaire data and weights
XX.country2 = data.FAO_country2[,1:8]
wt.country2 = data.FAO_country2$wt
# Fit weighted Rasch
rr.country2 = RM.w(XX.country2, wt.country2)
b=rr.country2$b
# ICC values
icc = ICC.fun(b)$icc
# ICC plot
icc = ICC.fun(b, plot = TRUE)
[Package RM.weights version 2.0 Index]