I generate .xml question banks with external software and import this into moodle for quizzes. This allows me to generate many iterations of the same question using different numbers, so students receive the same question with different input numbers (and corresponding correct responses). They are numeric questions, so they have a single number as a correct answer, with tolerances specified.
I noticed that if students put in $ signs or commas, then the question was marked wrong. A couple of days ago, I imported some questions, and I thought I noticed that if something other than a number was entered, it alerted that the answer must be a number. Is there a way to turn this data validation on, so students cannot submit things that are not numbers?
I'm baffled, because I thought that such data validation was default since it worked before, but now I cannot see any option in the quiz setup for data validation.