You can't do this in the quiz.
In the gradebook, you should be able to add an extra column "Quiz final score" or something like that, which uses a calculation to turn the real quiz score into 0 or 50.
You can't do this in the quiz.
In the gradebook, you should be able to add an extra column "Quiz final score" or something like that, which uses a calculation to turn the real quiz score into 0 or 50.