Trends in International Mathematics and Science Study 2015

International, 2015

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Reference ID

int-iea-timss-2015-v1

Producer(s)

TIMSS & PIRLS International Study Center

Collections

TIMSS and PIRLS

Metadata

DDI/XML JSON

Created on

Mar 20, 2021

Last modified

Mar 20, 2021

Page views

410000

Downloads

2858

Reliability Coding Status (ILRELIAB)

Data file: timss-2015-pop1-num-ach-allcountries-metadata

Overview

Valid: 1000

Invalid: 0

Type: Discrete

Decimal: 0

loc_start_pos: 158

loc_end_pos: 158

Width: 1

Range: 1 - 2

Format: Numeric

Questions and instructions

Categories

Value	Category	Cases
1	Students Booklet not used for Reliability Scoring	885	88.5%
2	Students Booklet was used for Reliability Scoring	115	11.5%

Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.

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