Programme for International Student Assessment, Computer-Based Assessment 2012
Albania, United Arab Emirates, Argentina...and 60 more, 2012
Reference ID
WLD_2012_PISA-CBA_v01_M
Producer(s)
Organisation for Economic Co-operation and Development
Metadata
Created on
Sep 05, 2014
Last modified
Jun 14, 2022
Page views
101267
Downloads
17250
READ - P2009 Sleep Q3 (PR404Q03)
Data file: CBA_COG12_MAR31
Overview
Valid:
78777
Invalid:
192546
Type:
Discrete
Start:
153
End:
153
Width:
1
Range:
-
Format:
character
Questions and instructions
Categories
| Value | Category | Cases | |
|---|---|---|---|
| 1 | Full credit | 59291 |
75.3%
|
| 2 | No credit | 9234 |
11.7%
|
| 3 | No credit | 2780 |
3.5%
|
| 4 | No credit | 6654 |
8.4%
|
| r | Not reached | 818 |
1%
|
| 7 | N/A | 190346 | |
| 8 | Invalid | 508 | |
| 9 | Missing | 1692 |
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.