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

56548

Downloads

5161

SCIE - P2006 Wild Oat Grass (Q01) (S408Q01)

Data file: INT_COG09_TD_DEC11

Overview

Valid: 158151

Invalid: 357807

Type: Discrete

Start: 201

End: 201

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
1	No credit	27668	17.5%
2	No credit	13689	8.7%
3	No credit	25023	15.8%
4	Full credit	82623	52.2%
8	Invalid	3091	2%
9	Missing	3098	2%
r	Not reached	2959	1.9%
7	N/A	357807

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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