Questionnaires with Likert Scales Using SoSciSurvey and GNU R

In a recent post, I discussed different online questionnaire tools. My personal preference is still SoSci Survey, because it’s support for complex Likert scale questions, the good options for data export, and the support for reuse. In this post, I focus on visualizing results from the System Usability Scale (SUS) question block that is available in SoSci Survey. For this, I am using GNU R and the likert package.

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