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Thread: Calculating Averages

  1. #1
    ok, i've been wondering about this a few days and thought you folks might be able to help

    i've sat 5 tests so far (well, 4 really, cos we missed one) and my marks for those 5 are:

    24/25, 17/20, 14/20, 0/40 and 18/30

    now, is my average percentage the sum of the marks i have divided by the total available marks (e.g. (24+17+14+0+18)/(25+20+20+40+30))

    or is it the average of the individual percentage scores?

    any help would be appreciated, thanks
    <span style='font-size:14pt;line-height:100%'>BLAH</span>

    <span style='font-size:14pt;line-height:100%'>Wayne Rooney - A thug and a thief</span>

  2. Lounge   -   #2
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    Whichever looks better. I&#39;d ignore the one you didn&#39;t take.



  3. Lounge   -   #3
    Skweeky's Avatar Manker's web totty
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    24/25 = 9.6/10
    17/20 = 8.5/10
    14/20 = 7/10
    0/40 = 0/10
    18/30 = 6/10


    9.6 + 8.5 + 7 + 0 + 6 = 31.1

    31.1/50 = 62.2%

  4. Lounge   -   #4
    UKMan's Avatar Poster
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    Originally posted by Billy_Dean@16 November 2003 - 17:18
    Whichever looks better. I&#39;d ignore the one you didn&#39;t take.


    ha ha - not if he wants to be honest.
    You do wanna be honest noob??

  5. Lounge   -   #5
    Originally posted by Skweeky@16 November 2003 - 16:22
    24/25 = 9.6/10
    17/20 = 8.5/10
    14/20 = 7/10
    0/40 = 0/10
    18/30 = 6/10


    9.6 + 8.5 + 7 + 0 + 6 = 31.1

    31.1/50 = 62.2%
    that was what i was thinking, but it seems like quite a high average considering i&#39;ve not done one of the exams

    thanks for the reply though
    <span style='font-size:14pt;line-height:100%'>BLAH</span>

    <span style='font-size:14pt;line-height:100%'>Wayne Rooney - A thug and a thief</span>

  6. Lounge   -   #6
    Originally posted by UKMan@16 November 2003 - 16:23
    ha ha - not if he wants to be honest.
    You do wanna be honest noob??
    about maths: yes
    <span style='font-size:14pt;line-height:100%'>BLAH</span>

    <span style='font-size:14pt;line-height:100%'>Wayne Rooney - A thug and a thief</span>

  7. Lounge   -   #7
    TClite's Avatar Poster
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    add the total score, add the total "out of" then divide *100

    which is 54.1%

  8. Lounge   -   #8
    Originally posted by Skweeky@16 November 2003 - 17:22
    24/25 = 9.6/10
    17/20 = 8.5/10
    14/20 = 7/10
    0/40*&nbsp; = 0/10
    18/30 = 6/10


    9.6 + 8.5 + 7 + 0 + 6 = 31.1

    31.1/50 = 62.2%
    points earned: 24+17+14+0+18= 73
    points possible: 25+20+20+40+30= 135

    avg= 73/135= 54.1%

    avg after you ace the next one= 73+40/135=83.7%

    Sweeky gave your averages for each test, but did not take into account that each test has a different weighting.

    Example:
    test 1: 90/100 =9/10
    test 2: 10/20 =5/10


    14/20=70% but since test 1 has 5x the points, the final average must reflect this. A 90 out of 100 would be equivalent to 5 tests where you score 18/20 so

    18/20=9/10
    18/20=9/10
    18/20=9/10
    18/20=9/10
    18/20=9/10
    10/20=5/10

    50/60= 83.3%

    Hope that was clear.
    Aren't we in the trust tree, thingey?

  9. Lounge   -   #9
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    Actual x 100 = Percentage Score
    Poss

    So the ~54% is right, but you multiply by 100 to get the percentage.

    When you get your other mark just add it to the top line.

    Bloody Tax Dodgers.

  10. Lounge   -   #10
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    Hobbes,

    I suppose you could also do a weighted mark-up if called upon to do so

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