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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487782

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MIDDLE TREE DID NOT GROW AS WELL (1) (S051010)

Data file: TIMSS-2015-pop1-studen-achievement-allcountries-metadata

Overview

Valid: 150

Invalid: 850

Type: Discrete

Decimal: 0

loc_start_pos: 324

loc_end_pos: 324

Width: 1

Range: 1 - 3

Format: Numeric

Questions and instructions

Categories

Value	Category	Cases
1	CORRECT RESPONSE	80	53.3%
2	INCORRECT RESPONSE	14	9.3%
3	INCORRECT RESPONSE_duplicated_79	56	37.3%
Sysmiss		850

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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