science1: Science achievement test data

Description Usage Format Source

Description

This data set contains responses of 420 students on 185 science items. Additional variables are included: id, grade, sex, booklet, track, version, and four dummy coded variables that indicate Track x Version groups. An incomplete block design was used with 4 booklets. Codes on items are: "0" - wrong "1" - right "mbd" - missing by design "mbi" - missing by intention "mir" - missing due to irregular response

Usage

1

Format

'data.frame': 420 obs. of 195 variables

Source

Simulated data


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