Trends in International Mathematics and Science Study, South Africa 2002
Grade 9

South Africa, 2002

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Reference ID

zaf-iea-tpisc-timss-g9-2002-v1

DOI

https://doi.org/10.25828/rnex-4873

Producer(s)

TIMSS & PIRLS International Study Center

Collections

TIMSS and PIRLS

Metadata

Documentation in PDF DDI/XML JSON

Created on

May 11, 2026

Last modified

May 11, 2026

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3905

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sci\how often ask\write explanations (ltbscswe)

Data file: timss-2002-sa-gr9-v1

Overview

Valid: 3428

Minimum: 1

Maximum: 4

Mean: 2.1852392065344

Standard deviation: 0.83289761850388

Type: Discrete

Width: 8

Format: Numeric

Questions and instructions

Categories

Value	Category	Cases
1	every or almost every lesson	876	25.6%
2	about half the lessons	1095	31.9%
3	some lessons	1403	40.9%
4	never	54	1.6%
9	omitted	0

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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