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lsasim (version 2.1.6)

pisa2012_math_item: Item parameter estimates for 2012 PISA mathematics assessment

Description

A dataset containing the estimated item parameters for the PISA 2012 mathematics assessment.

Usage

pisa2012_math_item

Arguments

Format

A data frame with 109 rows and 5 variables:

item_name

Item name.

item

Item number.

b

b parameter estimate.

d1

d1 parameter estimate (for partial credit items).

d2

d2 parameter estimate (for partial credit items).