Re: Averaging Grades
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Noonan,
There's something that the above (serious) replies neglected, which is that the maximum score on each type of assignment might not be identical. In fact, they usually aren't, unless the instructor has been careful to construct the grades that way. For example, if the tests are graded out of 100 points, but the quizzes only 20 points, the above formula will NOT work.
You need to convert all the scores to the same range, multiply them by their individual weights, and add up the result. The easiest way to convert all the grades to the same range is to just divide each score by the maximum possible score for that type of grade.
An example:
Tests: 45%, maximum test grade is 100 pts.
Quizzes: 20%, maximum quiz grade is 20 pts.
Participation/Attendance: 15%, Max participation/attendance grade is 10 pt.
Online Assignments: 10%, Max online Assignments grade is 100 pts.
Concert Reports: 10%, Max concert report is 5 pts.
Assume a student has an 85 test average, a 15 quiz average, a 10 part./att. grade, a 95 online grade, and a 4 concert report grade.
That student's final grade would be given by:
(85/100)*0.45 +
(15/20)*0.2 +
(10/10)*0.15 +
(95/100)*0.1 +
(4/5)*0.1 = 0.86 = 86%
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LOL (I'm assuming this is mocking)
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Why would you assume that?
Anyway, In addition to what Boro said, I noticed that some college instructors who used a weighted grade system similar to the one in the OP would simplify the averaging process by grading the different parts of the class on the appropriate scale to begin with. So, for example, the tests would be graded 0-45, the quizes 0-20, etc. If the professor had enough forsight to do this, all you have to do is add up the various averages to get the total percentage from 0-100.
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