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    Home / Central Data Catalog / WLD_2012_PISA_V01_M / variable [F9]
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Programme for International Student Assessment 2012

Albania, United Arab Emirates, Argentina...and 57 more, 2012
Reference ID
WLD_2012_PISA_v01_M
Producer(s)
Organisation for Economic Co-operation and Development
Metadata
Documentation in PDF DDI/XML JSON
Created on
Sep 05, 2014
Last modified
Jun 14, 2022
Page views
82794
Downloads
18523
  • Study Description
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  • Data files
  • INT_COG12_DEC03
  • INT_COG12_S_DEC03
  • INT_PAQ12_DEC03
  • INT_SCQ12_DEC03
  • INT_STU12_DEC03

Difference in Effort (Deffort)

Data file: INT_STU12_DEC03

Overview

Valid: 423761
Invalid: 61729
Type: Discrete
Start: 513
End: 514
Width: 2
Range: -
Format: character

Questions and instructions

Categories
Value Category Cases
-1 11181
2.6%
-2 5086
1.2%
-3 2323
0.5%
-4 1187
0.3%
-5 736
0.2%
-6 333
0.1%
-7 200
0%
-8 121
0%
-9 280
0.1%
0 107918
25.5%
1 104757
24.7%
2 94595
22.3%
3 47969
11.3%
4 22564
5.3%
5 12660
3%
6 5032
1.2%
7 3068
0.7%
8 1666
0.4%
9 2085
0.5%
97 N/A 1705
98 Invalid 6638
99 Missing 53386
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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