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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3844

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gen\full instructional days per week (bcbgdwfu)

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

Overview

Valid: 3824

Minimum: 1

Maximum: 97

Mean: 18.830020920502

Standard deviation: 33.061486142772

Type: Discrete

Width: 8

Format: Numeric

Questions and instructions

Categories

Value	Category	Cases
1	1 day	25	0.8%
2	2 days	12	0.4%
3	3 days	60	1.8%
4	4 days	270	8.3%
5	5 days	2825	87.1%
6	none	52	1.6%
99	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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