Quiz reports show results in different ways
Quiz reports: Edit quiz settings
This 'report' is actually a tool which lets users edit certain settings, currenty the open and close dates, for a quiz, without needing to give them permission to edit all the other quiz settings.
Quiz reports: Manual grading by student
A quiz 'report' add-on for Moodle, like the nomal manual grading report, but which lets you grade one student at a time, rather than one question at a time.