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

69321

Downloads

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Study - Haven't Understood (ST27Q09)

Data file: INT_STQ09_DEC11

Overview

Valid: 502956

Invalid: 13002

Type: Discrete

Decimal: 0

Start: 146

End: 146

Width: 1

Range: 1 - 4

Format: Numeric

Questions and instructions

Categories

Value	Category	Cases
1	Almost Never	41936	8.3%
2	Sometimes	168566	33.5%
3	Often	192835	38.3%
4	Almost always	99619	19.8%
7	N/A	4074
8	Invalid	1221
9	Miss	7707

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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