frac20 {GDINA}

Tatsuoka's fraction subtraction data

Description

Fraction Subtraction data (Tatsuoka, 2002) consists of responses of 536 examinees to 20 items measuring 8 attributes.

Usage

frac20

Format

A list of responses and Q-matrix with components:

dat

responses of 536 examinees to 20 items

Q

The 20 \times 8 Q-matrix

Author(s)

Wenchao Ma, The University of Alabama, [e-mail]

References

Ma, W., & de la Torre, J. (2020). GDINA: An R Package for Cognitive Diagnosis Modeling. Journal of Statistical Software, 93(14), 1-26.

Tatsuoka, C. (2002). Data analytic methods for latent partially ordered classification models. Journal of the Royal Statistical Society, Series C, Applied Statistics, 51, 337-350.

Examples

## Not run: 
mod1 <- GDINA(frac20$dat,frac20$Q,model="DINA")
mod1
summary(mod1)
# Higher order model
mod2 <- GDINA(frac20$dat,frac20$Q,model="DINA",att.dist="higher.order")
mod2
anova(mod1,mod2)

## End(Not run)