Trends in International Mathematics and Science Study 2007

International, 2007

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Reference ID

int-iea-timss-2007-v1.1

Producer(s)

TIMSS & PIRLS International Study Center

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TIMSS and PIRLS

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Created on

May 08, 2012

Last modified

May 25, 2020

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1078974

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sci\how often\do sci exp or invest (as4sdesi)

Data file: TIMSS 2007 - Population 1 - Student Bg - All Countries v1

Overview

Valid: 0

Invalid: 0

Type: Discrete

Decimal: 0

Width: 1

Range: 1 - 9

Format: Numeric

Questions and instructions

Categories

Value	Category
1	at least once a week
2	once or twice a month
3	a few times a year
4	never
9	omitted

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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