data.timss: Dataset TIMSS Mathematics
In sirt: Supplementary Item Response Theory Models

data.timss

R Documentation

Dataset TIMSS Mathematics

Description

This datasets contains TIMSS mathematics data from 345 students on 25 items.

Usage

data(data.timss)

Format

This dataset is a list. data is the dataset containing student ID (idstud), a dummy variable for female (girl) and student age (age). The following variables (starting with M in the variable name are items.

The format is:

List of 2
$ data:'data.frame':
..$ idstud : num [1:345] 4e+09 4e+09 4e+09 4e+09 4e+09 ...
..$ girl : int [1:345] 0 0 0 0 0 0 0 0 1 0 ...
..$ age : num [1:345] 10.5 10 10.25 10.25 9.92 ...
..$ M031286 : int [1:345] 0 0 0 1 1 0 1 0 1 0 ...
..$ M031106 : int [1:345] 0 0 0 1 1 0 1 1 0 0 ...
..$ M031282 : int [1:345] 0 0 0 1 1 0 1 1 0 0 ...
..$ M031227 : int [1:345] 0 0 0 0 1 0 0 0 0 0 ...
[...]
..$ M041203 : int [1:345] 0 0 0 1 1 0 0 0 0 1 ...
$ item:'data.frame':
..$ item : Factor w/ 25 levels "M031045","M031068",..: ...
..$ Block : Factor w/ 2 levels "M01","M02": 1 1 1 1 1 1 ..
..$ Format : Factor w/ 2 levels "CR","MC": 1 1 1 1 2 ...
..$ Content.Domain : Factor w/ 3 levels "Data Display",..: 3 3 3 3 ...
..$ Cognitive.Domain: Factor w/ 3 levels "Applying","Knowing",..: 2 3 3 ..