Trends in International Mathematics and Science Study 1999

International, 1999

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Reference ID

int-iea-timss-1999-v1.1

Producer(s)

TIMSS International Study Center

Collections

TIMSS and PIRLS

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Created on

May 08, 2012

Last modified

May 24, 2020

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GEN\WATER POLLUTION (BSBGENV2)

Data file: TIMSS 1999 - Population 2 - Student Bg - All Countries v1

Overview

Valid: 0

Invalid: 0

Type: Discrete

Decimal: 0

loc_start_pos: 743

loc_end_pos: 744

Width: 2

Range: 0 - 9

Format: Numeric

Questions and instructions

Categories

Value	Category
1	not at all
2	very little
3	somewhat
4	a great deal
8	not admin.
9	omitted
11	.B

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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