cog: Math PISA (2003) data

In pairwise: Rasch Model Parameters by Pairwise Algorithm

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

pairwise documentation built on April 18, 2023, 1:10 a.m.