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

37831

Downloads

4592

READ - P2009 Dust Mites Q8 (R435Q08T)

Data file: INT_COG09_TD_DEC11

Overview

Valid: 61097

Invalid: 454861

Type: Discrete

Start: 141

End: 141

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
0	No credit	3987	6.5%
1	No credit	5831	9.5%
2	No credit	16905	27.7%
3	Full credit	27517	45%
8	Invalid	71	0.1%
9	Missing	2927	4.8%
r	Not reached	3859	6.3%
7	N/A	454861

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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