cog {pairwise}

Math PISA (2003) data

Description

Data from the german sample of the PISA 2003 survey, containing 31 dichotomous items from the math task.

Usage

  data(cog)

Format

A data frame containing 34 variables and 4660 obsevations.

Details

The first 3 variables are ID variables. For further Information on variables and their meaning see the codebook PDF file available at ⁠https://www.oecd.org/pisa/pisaproducts/PISA12_cogn_codebook.pdf⁠

References

Database - PISA 2003, Downloadable Data, ⁠https://www.oecd.org/pisa/data/pisa2012database-downloadabledata.htm⁠

Examples

data(cog)
dim(cog)
##############################################################
names(cog) # show all variable names of data.frame cog
names(cog[,4:34]) # show the variable names of the math items
names(cog[,1:3]) # show the variable names of the ID variables