Trends in International Mathematics and Science Study 2015

International, 2015

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Reference ID

int-iea-timss-2015-v1

Producer(s)

TIMSS & PIRLS International Study Center

Collections

TIMSS and PIRLS

Metadata

DDI/XML JSON

Created on

Mar 20, 2021

Last modified

Mar 20, 2021

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383213

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GEN\PRIMARY SCHOOL\DO SIMPLE SUBTRACTION (ACBG18K)

Data file: timss-2015-pop1-bg-sch-allcountries-metadata

Overview

Valid: 922

Invalid: 78

Type: Discrete

Decimal: 0

loc_start_pos: 95

loc_end_pos: 95

Width: 1

Range: 1 - 4

Format: Numeric

Questions and instructions

Categories

Value	Category	Cases
1	Less than 25%	428	46.4%
2	25â€“50%	181	19.6%
3	51â€“75%	149	16.2%
4	More than 75%	164	17.8%
Sysmiss		78

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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