Programme for International Student Assessment 2009

Albania, Argentina, Australia...and 70 more, 2009 - 2010

Reference ID

WLD_2009_PISA_v02_M

Producer(s)

Organisation for Economic Co-operation and Development (OECD)

Metadata

Documentation in PDF DDI/XML JSON

Study website

Created on

Sep 05, 2014

Last modified

Jun 14, 2022

Page views

69686

Downloads

6052

SCIE - P2006 Wild Oat Grass (Q04) (S408Q04T)

Data file: INT_COG09_TD_DEC11

Overview

Valid: 158159

Invalid: 357799

Type: Discrete

Start: 203

End: 203

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
0	No credit	4256	2.7%
1	No credit	23043	14.6%
2	No credit	51991	32.9%
3	Full credit	73236	46.3%
8	Invalid	40	0%
9	Missing	1973	1.2%
r	Not reached	3620	2.3%
7	N/A	357799

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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