fcat.RdData from Flemish Community Attainment-Targets (FCAT) Study
The fcat data frame has 4851 rows and 3 columns
a factor with 9 levels T1(4), T2(6), T3(8), T4(5), T5(9), ..., T9(5)
a factor with 539 levels 1, 2, 3, 4, 5, ..., 539
an integer vector with values from 0 to 9
Janssen, R., Tuerlinckx, F., Meulders, M., & De Boeck, P. (2000). A hierarchical IRT model for criterion-referenced measurement. Journal of Educational and Behavioral Statistics. 25(3), 285.
An educational study, in which elementary school graduates were evaluated with respect to reading comprehension in Dutch. Pupils from randomly selected schools were assessed for a set of nine attainment targets. The dataset is an example of grouped data, for which the grouping factors are crossed.
summary(fcat)
#> target id scorec
#> T1(4) : 539 1 : 9 Min. :0.000
#> T2(6) : 539 2 : 9 1st Qu.:3.000
#> T3(8) : 539 3 : 9 Median :4.000
#> T4(5) : 539 4 : 9 Mean :3.903
#> T5(9) : 539 5 : 9 3rd Qu.:5.000
#> T6(6) : 539 6 : 9 Max. :9.000
#> (Other):1617 (Other):4797