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

69690

Downloads

6052

READ - P2000 Optician (Q06) (R227Q06)

Data file: INT_COG09_TD_DEC11

Overview

Valid: 156857

Invalid: 359101

Type: Discrete

Start: 94

End: 94

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
0	No credit	44382	28.3%
1	Full credit	98107	62.5%
8	Invalid	0	0%
9	Missing	11568	7.4%
r	Not reached	2800	1.8%
7	N/A	359101

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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