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

37280

Downloads

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READ - P2000 Optician (Q03) (R227Q03)

Data file: INT_COG09_TD_DEC11

Overview

Valid: 156325

Invalid: 359633

Type: Discrete

Start: 93

End: 93

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
0	No credit	44924	28.7%
1	Full credit	75172	48.1%
9	Missing	34087	21.8%
r	Not reached	2142	1.4%
7	N/A	359633

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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