The Programme for International Student Assessment, Electronic Reading Assessment 2009

World, 2009

Reference ID

WLD_2009_PISA-ERA_v01_M

Producer(s)

Organisation for Economic Co-operation and Development (OECD)

Metadata

DDI/XML JSON

Created on

Sep 05, 2014

Last modified

Mar 29, 2019

Page views

26623

Downloads

2106

Lessons - Noise and disorder (ST36Q02)

Data file: ERA_STQ09_JUNE11

Overview

Valid: 105250

Invalid: 2144

Type: Discrete

Decimal: 0

Start: 206

End: 206

Width: 1

Range: -

Format:

Questions and instructions

Categories

Value	Category
1	Never or hardly ever
2	Some lessons
3	Most lessons
4	All lessons
7	N/A
8	Invalid
9	Miss

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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