Looking at the quiz statistics report page (https://docs.moodle.org/27/en/Quiz_statistics_report) I was wondering about the red markings at questions 1 and 4:
What do the mean? Do they refer to a low discrimination index, or...!? What is the trigger for the markings? When do they appear?
Best rgs,
Brian
They are questions where the Discrimination index is low. That is a bad sign. It means that many students who score a high overall grade got an bad score for this question, and vice versa. It suggests you should check that question, to make sure it does not contain an error.
Hi Tim,
Thanks for the reply. What triggers the markings, do you know? Is it a certain level/score or something?
The exact test applied is discriminative efficiency < 15%
https://github.com/moodle/moodle/blob/master/mod/quiz/report/statistics/statistics_table.php#L382
