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

383666

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2774

BTBS21A (BTBS21A)

Data file: TIMSS-2015-pop2-bg-teacher-sci-allcountries-metadata

Overview

Valid: 890

Invalid: 110

Type: Discrete

Decimal: 0

loc_start_pos: 170

loc_end_pos: 170

Width: 1

Range: 1 - 5

Format: Numeric

Questions and instructions

Categories

Value	Category	Cases
1	No science homework	57	6.4%
2	Less than once a week	215	24.2%
3	1 or 2 times a week	465	52.2%
4	3 or 4 times a week	75	8.4%
5	Every day	78	8.8%
Sysmiss		110

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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