Webbased Data Dissemination The Online Data Analyzer

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Web-based Data Dissemination The Online Data
Analyzer

• Report to the General AssemblyAmiens, October
  2006

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Modes to Analyse Data from IEA Studies

• Data files from the International Database and
  macros provided by IEA
• SPSS required
• Editing of syntax necessary
• Only limited statistics available
• International Database and IDB-Analyzer
• SPSS required
• Limited statistics
• Other analyses software (Wesvar)
• Problematic file preparation
• Output difficult to interpret
• Many statistics included

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Whats missing?

• Tool for a quick look into the data
• Simple statistics
• Accessible through the internet
• Fast and reliable system
• Solution IEA Online Data Analyzer

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The Online Data Analyzer (Background)

• Uses program package developed in the context of
  the Data Documentation Initiative (DDI)
• Initial aim Complete documentation of a survey
• Sampling
• Instrumentation
• Basic statistics
• Data
• Weighting
• Total life cycle of a study

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The Online Data Analyzer

• In IEA not all features of the system applied
• Comprehensive documentation available through
• Technical Report
• International Database documentation including
  supplements
• In general, copies of national instruments are
  not available
• This information is included into the NESSTAR
  System

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How to access the ODA www.iea.nl
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Directly http//www.ieadata.org
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Entering the system
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Hierarchical Structure The Studies
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Type of Respondent
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Country of Interest
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Selection of Information
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Metadata
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Metadata Data Files Description
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Metadata Data Files Description
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Metadata Other Documentation
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Other Documentation Intern. Version
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Variable Descriptions Order
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Variable Description Level of Analysis
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Initial Statistics (NOT WEIGHTED)
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Analysis Tabulation
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Shape the Table
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But Register First
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(No Transcript)
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Access and access control

• Free of charge
• Registration necessary because we want to know
  who is interested in IEA data
• Registration data stored at the DPC for internal
  analyses only
• Time and location of interested person
• No information about requested analyses

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Simple table
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Add a Measure
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(No Transcript)
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Crosstabulation Averages
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Crosstabulation Standard Errors
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Create New Variables
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New Variable
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Where to Find The New Variable
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Regression
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Regression II
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Create Graphs
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(No Transcript)
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Export Results as PDF
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Export to Excel
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Summary

• IEA data at a glance
• Easy to use
• Frequencies, crosstabulation, regression
• Correct standard errors (sampling and impution)
• Allows computation of own variables
• Export features

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Thank you