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

36608

Downloads

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SCIE - P2006 Wild Oat Grass (Q03) (S408Q03)

Data file: INT_COG09_TD_DEC11

Overview

Valid: 158157

Invalid: 357801

Type: Discrete

Start: 202

End: 202

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
0	No credit	89788	56.8%
1	Full credit	41641	26.3%
9	Missing	23387	14.8%
r	Not reached	3341	2.1%
7	N/A	357801

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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