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Thread: Need Help Fast.....Weighted average?

  1. Dec 4th, 2002, 11:30 AM #1
    hipopony66
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    Need Help Fast.....Weighted average?

    Hey, I have to use this today in my programming test, and I don't remember how to calculate a weighted average. Say there are 3 grades a Quiz, a Test, and Homework.

    The test is weighted 60% of the grade, the homework is 20%, and the Quiz is 20% of the grade.

    Say the grades for these are: 85, 70, 90

    How would I calculate the weighted average? Any help extremely appreciated.
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  2. Dec 4th, 2002, 11:37 AM #2
    plenderj
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    That's a purely statistical problem, not programming
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  3. Dec 4th, 2002, 11:41 AM #3
    nemaroller
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    Multiply each grade by its percentage.... then sum the results from all 3...

    Test Weight: 60%
    Score: 85
    WS: 51

    Hmk Weight: 20%
    Score: 70
    WS: 14

    Qz Weight: 20%
    Score: 90
    WS: 18

    Weighted Average: 51+14+18 = 83
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  4. Dec 4th, 2002, 11:44 AM #4
    hipopony66
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    Thanks......

    I know that is not programming, but I have to assign costants and make that calculation in my program to be able to update the database I'm working with. I don't know why he couldn't just let us use a regular average.
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  6. Dec 4th, 2002, 01:08 PM #5
    Shaggy Hiker
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    How often is the simple answer the one desired?
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  7. Dec 4th, 2002, 01:56 PM #6
    nemaroller
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    Wink

    Is there a complex version?
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  8. Dec 4th, 2002, 02:02 PM #7
    Shaggy Hiker
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    I have no doubt that, given a little time, there is always an answer to any question such that nobody, not even the person giving the answer can figure it out.
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  9. Dec 4th, 2002, 02:05 PM #8
    nemaroller
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    Unhappy

    Stop screwing with me man... my head's hurtin...
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