Item Parameters from Two PISA Studies

Share:

Description

This data frame contains item parameters from two PISA studies. Because the Rasch model is used, only item difficulties are considered.

Usage

1
data(data.pisaPars)

Format

A data frame with 25 observations on the following 4 variables.

item

Item names

testlet

Items are arranged in corresonding testlets. These names are located in this column.

study1

Item difficulties of study 1

study2

Item difficulties of study 2

Want to suggest features or report bugs for rdrr.io? Use the GitHub issue tracker.