GDINA (version 1.4.2)

frac20: Tatsuoka's fraction subtraction data

Description

Fraction Subtraction data consists of responses of 536 examinees to 20 items measuring 8 attributes. The data set is obtained from http://onlinelibrary.wiley.com/journal/10.1111/(ISSN)1467-9876/homepage/series_c_datasets.htm.

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

References

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)
## ---------------------------------------------