man/examples/parameters.R

In NAEPirtparams: IRT Parameters for the National Assessment of Education Progress

\dontrun{

param <- NAEPirtparams::parameters
param8M2005 <- param[param$level == 8 & param$subject == 'Mathematics' & param$year == 2005, ]
head(param8M2005)
      source level levelType  NAEPid  ...  subtest     subject year    a     b    c  ...  
7657 website     8     grade M066201  ...  algebra Mathematics 2005 0.77 -1.75 0.07  ...  
7658 website     8     grade M067401  ...  algebra Mathematics 2005 0.92  1.28 0.18  ...  
7659 website     8     grade M086101  ...  algebra Mathematics 2005 0.63  0.32 0.11  ...  
7660 website     8     grade M047701  ...  algebra Mathematics 2005 1.01  1.29 0.26  ...  
7661 website     8     grade M067301  ...  algebra Mathematics 2005 1.02 -0.03 0.16  ...  
7662 website     8     grade M067701  ...  algebra Mathematics 2005 0.78 -2.01 0.06  ...  

}