Using the IEA IDB Analyzer to merge and analyze data

1. Using the IEA IDB Analyzer to merge and analyze data

2. Table of content • Introduction to the IEA IDB Analyzer • Installation process • Selecting and merging data • Hands-on training

3. Table of content Introduction to the IEA IDB Analyzer Installation process Selecting and merging data Hands-on training

4. Introduction to IDB Analyzer • WHAT IT IS • A software program developed by the IEA Data Processing and Research Center to analyze the data from ICCS and other IEA surveys • Calculates correct standard errors when conducting analysis with ICCS • Uses optimized algorithms for computing means, percentages and regressions • BONUS! • Easy creation of data sets for use in SPSS • Merging countries and/or data levels • Selection of analysis variables

5. What can it do? • For ICCS, compute percentages, means (and SD), correlations, and linear regressions – including their respective standard errors • Allows to analyze data calculating the correct standard errors using JRR (jackknife repeated replication) • Enhanced SPSS and MS Excel output including adding titles to tables and column labels

6. Why Do We Need IDB Analyzer? • Very common question: “Why can’t I just do this in SPSS?” • Answer: “Because of the data structure!” • Sampling is multi-stage, clustered, and stratified which can not be handled correctly by SPSS (remember the sample design presentation) • SPSS can not do variance estimation based on replicated weights • IDB Analyzer handles these issues and “adds” the missing features to SPSS!

7. Table of content • Introduction to the IEA IDB Analyzer • Installation process • Selecting and merging data • Hands-on training

8. Download IDB Analyzer The IDB Analyzer is available for download at the IEA website: www.iea.nl Select the “IEA Studies Datasets and Data Analyzers” subsection Download the “IDBAnalyzer_Setup.exe” file from there

9. Installation process • SPSS 11 or higher needs to be installed beforehand • Administrator rights are required for installation process • IDB Analyzer has two modules • Merge – our starting point • Analyze

10. Installation process • Double click on the setup file (Seminar version: C:\ICCS2009\Software\IDB_Analyzer\IDBAnalyzer_Setup_v2.0.30.33.exe)

11. Installation process

12. Windows Vista… • With Windows Vista an error may occur during the merge process: • "COM object with CLSID {...} is either not valid or not registered"

13. Windows Vista… • To solve this problem: • Go to the SPSS installation directory and select the SPSS main program. • Right click on it and select properties. • Then select the Compatibility tab in the properties window • Select the ‘Run as Administrator’ checkbox. • Then click ‘OK’ to close the window and restart IDB Analyzer.

14. Table of content • Introduction to the IEA IDB Analyzer • Installation process • Selecting and merging data • Hands-on training

15. How to Open the IDB Analyzer Start > Programs > IEA > IDB Analyzer > Merge Module

16. What You Will See …

17. Data Source Directory Merge Module Select...

18. Merge Module Select... Data Source Directory Study Year Grade

19. Merge Module Select... Data Source Directory Study Year Grade Participants

20. Merge Module Select... Data Source Directory Study Year Grade Participants

21. Merge Module • Edit the country list to edit the country labels Example: translate „Spain“ to „España”

22. Merge Module • Save and confirm the change with „Yes“ and „Save“

23. Merge Module • To undo change go to „Edit Country List“  „Restore Defaults“ and confirm with „Yes“

24. Merge Module Select... Data Source Directory Study Year Grade Participants

25. Merge Module Select... Data Source Directory Study Year Grade Participants

26. Merge Module Select... Data Source Directory Study Year Grade Participants

27. Merge Module Select... Data Source Directory Study Year Grade Participants Next>>

28. Merge Module Select... File Types Variables

29. Merge Module Select... File Types Variables

30. Merge Module Select... File Types Variables

31. Merge Module Select... File Types Variables

32. Merge Module Select... File Types Variables ID and Sampling Variables are selected automatically.

33. Supported File Type Merges Any student files can be merged together. Any student files can be merged with the School Questionnaire file. Teacher Questionnaire file can be merged with the School Questionnaire file. Student files cannot be merged directly with the Teacher Questionnaire file.

34. Merge Module Select... File Types Variables Define File Name and Save

35. Merge Module Select... File Types Variables Define File Name and Save SPSS syntax file is stored in specified directory. IDB Analyzer launches SPSS and opens the syntax file automatically. Start SPSS

36. Merge Module

37. Merge Module • From the SPSS syntax editor choose: • Run > All • The syntax is executed and the merged file is saved under the location you have chosen in the last step of the IDB Analyzer Merge Module

38. Merge Module You can now start analyzing your data using the Analysis Module of the IDB Analyzer.  More on this after lunch!

39. Thank you for your attention!

40. Table of content Introduction to the IEA IDB Analyzer Installation walkthrough Selecting and merging data Hands-on training

41. Hands-on Training Copy files from the USB-stick to your C:\ drive Create the following folder: C:\ICCS2009\Work Install IDB Analyzer from C:\ICCS2009\Software\IDB_Analyzer Open the IDB Analyzer Merge Module Define data source: C:\ICCS2009\Data Select your country Select all variables from the School Questionnaire file and the Int. Student Questionnaire file Define file name: C:\ICCS2009\Work\ICG_ISG_INTC2.sps Start SPSS Run all in the *.sps SPSS script to create *.sav SPSS data file