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

36639

Downloads

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SCIE - P2006 Bacteria in Milk (Q01) (S428Q01)

Data file: INT_COG09_TD_DEC11

Overview

Valid: 158934

Invalid: 357024

Type: Discrete

Start: 215

End: 215

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
1	No credit	52943	33.3%
2	No credit	6454	4.1%
3	Full credit	80392	50.6%
4	No credit	9829	6.2%
8	Invalid	738	0.5%
9	Missing	4297	2.7%
r	Not reached	4281	2.7%
7	N/A	357024

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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