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

36591

Downloads

4577

SCIE - P2006 Bacteria in Milk (Q03) (S428Q03)

Data file: INT_COG09_TD_DEC11

Overview

Valid: 158924

Invalid: 357034

Type: Discrete

Start: 216

End: 216

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
1	No credit	20532	12.9%
2	No credit	19177	12.1%
3	No credit	8796	5.5%
4	Full credit	98603	62%
8	Invalid	1606	1%
9	Missing	5623	3.5%
r	Not reached	4587	2.9%
7	N/A	357034

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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