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

69206

Downloads

6052

READ - P2000 Optician (Q01) (R227Q01)

Data file: INT_COG09_TD_DEC11

Overview

Valid: 156715

Invalid: 359243

Type: Discrete

Start: 91

End: 91

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
1	No credit	9263	5.9%
2	Full credit	70302	44.9%
3	No credit	42007	26.8%
4	No credit	27216	17.4%
8	Invalid	2370	1.5%
9	Missing	3954	2.5%
r	Not reached	1603	1%
7	N/A	359243

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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