Calculating a grade percentage from incomplete data

[ebakunin]

Good afternoon,

I have a nasty word problem about getting a final score from an incomplete number of assignments. If I have finished half the assignments in a class how do I calculate my current cumulative score if each assignment is weighted differently in the final grade?

In mathspeak:
Assume I have four assignments, each with a different weight toward the final grade. Here is the distribution:

Assignment #1: 20% weight
Assignment #2: 20% weight
Assignment #3: 30% weight
Assignment #4: 10% weight

I have only completed two of the assignments. I can still finish the other two, so I have incompletes as opposed to a zeros.

Assignment #1: 20% weight | 93% score
Assignment #2: 20% weight | n/a
Assignment #3: 30% weight | 95% score
Assignment #4: 10% weight | n/a

From this information, what is my cumulative score? More importantly, what is the formula used to calculate my cumulative score?

Thanks so much for the help.

 

[tkhunny]

\(\displaystyle \frac{CumulativeCreditsEarned}{CumulativeCreditsPossible}\)

This is the case at EVERY moment. Do not include anything that has not yet happened. If you miss an assignment, you get 0 for Earned.

 

[HallsofIvy]

Assuming there is no penalty for late assignments (the "incomplete"s), which i am not at all sure I would agree with, the total possible "weights", so far, you have done assignments with total weights 50% of your grade. Calculate the weighted score of those two and multiply by 2.

 

[ebakunin]

Sorry I took so long to respond. This is exactly what I needed. Thanks a lot for the help!