As you debate with yourself on doing your weekly assignment, let me post some graphs showing the average marks in weekly quizzes, tests, final and final mark for ELTK1100.
You can draw your own conclusions, but those that do well in the weekly quizzes, seem to do well overall.
The weekly quiz mark is based upon the best 6 of 8 quizzes, which are usually marked as right/wrong (about 70% of the time).