[YokYok]

I did them all and got 100% everywhere (except in HW6). I am kind of disappointed. May be the quizzes are part of the grading?

[wizzard]

I think this has to be the case. My friend has a lower HW and midterm average than me, but he got the letter and I did not.

[learc83]

My gut feeling is that they weighted specific questions.

[EdiX]

I doubt it, I got the letter but my quizzes scores are rather mediocre.