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

36648

Downloads

4577

SCIE - P2006 Bacteria in Milk (Q05) (S428Q05)

Data file: INT_COG09_TD_DEC11

Overview

Valid: 158929

Invalid: 357029

Type: Discrete

Start: 217

End: 217

Width: 1

Range: -

Format: character

Questions and instructions

Categories

Value	Category	Cases
0	No credit	66567	41.9%
1	Full credit	57005	35.9%
9	Missing	30359	19.1%
r	Not reached	4998	3.1%
7	N/A	357029

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.

Back to Catalog