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CDM (version 2.7-7)

data.fraction2: Fraction Subtraction Dataset 2

Description

This is the fraction subtraction data set with 536 students and 11 items. For this data set, several $Q$ matrices are available. The Q-matrix was defined in de la Torre (2009).

Usage

data(data.fraction2)

Arguments

format

The data is a list. The first entry data contains the data frame. The entry q.matrix1 contains the Q-matrix of Henson, Templin and Willse (2009). The third entry q.matrix2 is an alternative Q-matrix of de la Torre (2009). The fourth entry is a modified Q-matrix of q.matrix1. The format is: $ data :'data.frame': ..$ H01: int [1:536] 1 1 1 1 1 0 0 1 0 0 ... ..$ H02: int [1:536] 1 1 1 0 0 0 0 0 0 0 ... ..$ H03: int [1:536] 0 1 0 0 0 1 1 0 1 1 ... ..$ H04: int [1:536] 1 1 0 1 0 0 0 0 0 0 ... ..$ H05: int [1:536] 1 1 0 1 0 0 0 0 0 0 ... ..$ H06: int [1:536] 1 1 0 1 1 0 0 0 1 1 ... ..$ H08: int [1:536] 1 1 1 0 0 0 0 0 0 0 ... ..$ H09: int [1:536] 1 1 1 1 0 0 0 0 0 0 ... ..$ H10: int [1:536] 0 1 0 0 0 0 0 0 0 0 ... ..$ H11: int [1:536] 1 1 0 1 0 0 0 0 0 0 ... ..$ H13: int [1:536] 1 1 0 1 0 0 0 0 0 0 ... $ q.matrix1: int [1:11, 1:3] 1 1 1 1 1 1 1 1 1 1 ... ..- attr(*, "dimnames")=List of 2 .. ..$ : chr [1:11] "H01" "H02" "H03" "H04" ... .. ..$ : chr [1:3] "QH1" "QH2" "QH3" $ q.matrix2: int [1:11, 1:5] 1 1 0 1 1 1 1 1 1 1 ... ..- attr(*, "dimnames")=List of 2 .. ..$ : chr [1:11] "H01" "H02" "H03" "H04" ... .. ..$ : chr [1:5] "QT1" "QT2" "QT3" "QT4" ... $ q.matrix3: num [1:11, 1:3] 0 0 0 1 0 0 0 0 1 1 ... ..- attr(*, "dimnames")=List of 2 .. ..$ : chr [1:11] "H01" "H02" "H03" "H04" ... .. ..$ : chr [1:3] "Dim1" "Dim2" "Dim3"

source

See fraction.subtraction.data for more information about data source.

Example Index

gdm (Example 3)

References

de la Torre, J. (2009). DINA model parameter estimation: A didactic. Journal of Educational and Behavioral Statistics, 34, 115--130. Henson, R. A., Templin, J. T., & Willse, J. T. (2009). Defining a family of cognitive diagnosis models using log-linear models with latent variables. Psychometrika, 74, 191-210.