7 months ago
Last edited at 7:28AM on 8/2/2013
If they are equally-weighted, add all the numbers up and divide by the number of grades (4, in this case). If they aren't equally-weighted, then you will need to increase the number of times you add the more-heavily weighted grades in order to reflect their weight. Ex.: You have a 85 that is 30% of your grade, a 92 that is 20%, a 56 that is 10%, and a 62 that is 40%. The 56 gets added once, the 62, 4 times, the 92, twice, and the 85, 3 times. Then divide by the total number of numbers you added (10, in this case).