frac20 | R Documentation |
Fraction Subtraction data (Tatsuoka, 2002) consists of responses of 536 examinees to 20 items measuring 8 attributes.
frac20
A list of responses and Q-matrix with components:
dat
responses of 536 examinees to 20 items
Q
The 20 \times 8
Q-matrix
Wenchao Ma, The University of Alabama, wenchao.ma@ua.edu
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.
## 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)
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.