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The Reporting Of Icils Results, Wolfram Schulz
The Reporting Of Icils Results, Wolfram Schulz
Dr Wolfram Schulz
This chapter describes the procedures that were used to report the population estimates in the ICILS 2013 publications. It starts with a description of the replication methodology used to estimate sampling variance, followed by an outline of how the imputation variance of students’ computer and information literacy (CIL) was computed. The subsequent section outlines the procedures for conducting significance tests of differences between country and subsample means or percentages.
Scaling Procedures For Icils Questionnaire Items, Wolfram Schulz, Tim Friedman
Scaling Procedures For Icils Questionnaire Items, Wolfram Schulz, Tim Friedman
Dr Tim Friedman
This chapter describes the procedures used to scale the ICILS questionnaire data (for students, teachers, school principals, and ICT coordinators) and the indices based on them. Two general types of indices could be distinguished, both of which derived from the ICILS questionnaires: 1. Simple indices constructed through arithmetical transformation or simple recoding, for example, ratios between ICT and students or an index of immigration background based on information about the country of birth of students and their parents; and 2. Scale indices derived from scaling of items, a process typically achieved by using item response modeling of dichotomous or Likert-type …
Scaling Procedures For Icils Questionnaire Items, Wolfram Schulz, Tim Friedman
Scaling Procedures For Icils Questionnaire Items, Wolfram Schulz, Tim Friedman
Dr Wolfram Schulz
This chapter describes the procedures used to scale the ICILS questionnaire data (for students, teachers, school principals, and ICT coordinators) and the indices based on them. Two general types of indices could be distinguished, both of which derived from the ICILS questionnaires: 1. Simple indices constructed through arithmetical transformation or simple recoding, for example, ratios between ICT and students or an index of immigration background based on information about the country of birth of students and their parents; and 2. Scale indices derived from scaling of items, a process typically achieved by using item response modeling of dichotomous or Likert-type …