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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5349

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sci\ready\chemistry\uses of acids (ltbsfr09)

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

Overview

Valid: 3039

Minimum: 1

Maximum: 3

Mean: 1.5699243172096

Standard deviation: 0.65336801059755

Type: Discrete

Width: 8

Format: Numeric

Questions and instructions

Categories

Value	Category	Cases
1	very ready	1583	52.1%
2	ready	1180	38.8%
3	not ready	276	9.1%
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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