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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SCI\PREPARED\PHYSICAL\COMMON ENERGY SOURCE (ATBS10BE)

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

Overview

Valid: 655

Invalid: 345

Type: Discrete

Decimal: 0

loc_start_pos: 280

loc_end_pos: 280

Width: 1

Range: 1 - 4

Format: Numeric

Questions and instructions

Categories

Value	Category	Cases
1	Not applicable	102	15.6%
2	Very well prepared	410	62.6%
3	Somewhat prepared	125	19.1%
4	Not well prepared	18	2.7%
Sysmiss		345

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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