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  • R 'intsvy'
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R 'intsvy'

The R package ‘intsvy‘ provides analysis and visualisation tools for international assessment data (eg. PISA, TIMSS, PIRLS). Data analysis functions take into account the complex sample design (with replicate weights) and rotated test forms (with plausible achievement values) in the calculation of point estimates and standard errors of means, standard deviations, regression coefficients, correlation coefficients, and frequency tables. Visualisation tools present data aggregates in standardised graphical form.

Data analysis examples

PISA 2018 (pdf)Download
TIMSS 2019 (pdf)Download
PIRLS 2016 (pdf)Download
SEA-PLM (pdf)Download

Video tutorials

Video tutorials

Video tutorials

  •  Video 1: Installing R ‘intsvy’
  • Video 2: Directory paths and operating systems
  • Video 3: Printing data labels
  • Video 4: Importing data
  • Video 5: Calculating average student performance
  • Video 6: Frequency tables
  • Video 7: Proficiency levels
  • Video 8: Regression analysis

Online presence

Video tutorials

Video tutorials

  •  JSS article
  • IEA newsletter
  • R-bloggers (post 1, post 2)
  • OECD presentation
     


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