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
Created on
Sep 05, 2014
Last modified
Jun 14, 2022
Page views
100769
Downloads
24175
READ - P2009 Sleep Q3 (PR404Q03)
Data file: INT_COG12_DEC03
Overview
Valid:
112880
Invalid:
273849
Type:
Discrete
Start:
151
End:
151
Width:
1
Range:
-
Format:
character
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 1 | Full credit | 81726 |
72.4%
|
| 2 | No credit | 13760 |
12.2%
|
| 3 | No credit | 4987 |
4.4%
|
| 4 | No credit | 10700 |
9.5%
|
| r | Not reached | 1707 |
1.5%
|
| 7 | N/A | 270360 | |
| 8 | Invalid | 734 | |
| 9 | Missing | 2755 |
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.