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

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262573

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BTBS19CC (BTBS19CC)

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

Overview

Valid: 398

Invalid: 602

Type: Discrete

Decimal: 0

loc_start_pos: 145

loc_end_pos: 145

Width: 1

Range: 1 - 4

Format: Numeric

Questions and instructions

Categories

Value	Category	Cases
1	Every or almost every day	22	5.5%
2	Once or twice a week	69	17.3%
3	Once or twice a month	173	43.5%
4	Never or almost never	134	33.7%
Sysmiss		602

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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