The following is the grading curve for the final. You can use this curve to convert your numerical grade to a letter grade for the assignment.
Warning: The system for determining a final grade is complex, and while your letter grades on assignments and exams are a good indicator of the range of your final grade, they are not a guarantee of any particular final grade. For example, if you were to earn B-minuses on every exam and every assignment, you are not guaranteed to get a B- as your final grade in the class. Your final grade might very well be a C+ or a B. However, you would be safe in assuming that you were not going to get either an A or a D.
These grade curves are posted for your information only, and should not be viewed as a promise of a particular final grade.
NC means No Credit, and is usually given for missing exams. It is also given in a couple of other cases: as a temporary grade when an extension has been arranged, and as a default grade when someone has withdrawn from the course. The latter situation is the cause of the majority of the NC grades in the table below.