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

Collections

TIMSS and PIRLS

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Documentation in PDF DDI/XML JSON

Created on

May 08, 2012

Last modified

May 25, 2020

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1371003

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gen\percent of students 1st language (ac4gnala)

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

Overview

Valid: 0

Invalid: 0

Type: Discrete

Decimal: 0

loc_start_pos: 23

loc_end_pos: 23

Width: 1

Range: 1 - 9

Format: Numeric

Questions and instructions

Categories

Value	Category
1	more than 90 percent
2	76 to 90 percent
3	50 to 75 percent
4	less than 50 percent
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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