Hello,
we are using the Questionnaire activity to collect data from students. Several questions are 5-point rating scales, possible answers range from 1-5. So the number of possible answers are implemented as named degrees, ranging form 1-5:
The first error appears in the answer report:
The percentage is calculated based on the absolute frequency and should sum up to 100%, which it won't in this example (1+6+19+23+23 = 72). Where are the missing 28%?
The answer can be found when downloading the raw data. The results suddenly range from 1-7 plus -999 for missing values:
Where do the values 6 and 7 come from? They were not specified inside the question? The frequencies sum up to the missing 28% (468 + 190 = 658; 658 / 2295 * 100 = 28%).
What is going on here and how can we ensure the questionnaire collects valid data?
For completeness:
- Moodle is 3.11.5 (Build: 20220117)
- Questionnaire plugin is 3.10.1 (Build - 2021080400)
Any suggestions are highly appreciated!