Trends in International Mathematics and Science Study 2015

International, 2015

Get Microdata

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

Page views

248717

Downloads

2185

MARBLE ROLLS DOWN THE TRACK (1) (SI51147)

Data file: timss-2015-pop1-stu-ach-reliable-allcountries-metadata

Overview

Valid: 141

Invalid: 859

Type: Discrete

Decimal: 0

loc_start_pos: 445

loc_end_pos: 445

Width: 1

Range: 1 - 3

Format: Numeric

Questions and instructions

Categories

Value	Category	Cases
1	Identical codes (both digits in the original and second scores)	137	97.2%
2	Identicalscorlevels,butdifferentdiagnosticcds(frstdgtofbthscrsarthsm,scnddffrnt)	3	2.1%
3	Different score levels (first digit of both scores are different)	1	0.7%
Sysmiss		859

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.

Back to Catalog