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Characterize Top 25% - Bottom 25% of a list and average

  1. 01-22-2015, 04:01 PM #1
    Eftychia
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    Characterize Top 25% - Bottom 25% of a list and average

    Hi all!

    I need your precious help once again...

    1.In the attachment you will see a list of numbers (B2:B51) and I need next to each number (C2:C52) to have the values "T" if the number is in the top 25% of the list, 'MT" if the number is in the "next" 25% of the list, "MB" if the number is in the third 25% of the list and "B" if the number is in the bottom 25% of the list.

    Do you have in mind any formula which can calculate this? I am not familiar with formulas which contains lists/arrays so the only way I have thought is sorting and putting the values manually..

    2.In the cell B53 I need the average of the numbers of the top 25% divided by the average of the bottom 25%. The formula though shouldn't involve the values in column C.

    Any help will be appreciated
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  2. 01-22-2015, 04:16 PM #2
    Ace_XL
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    Re: Characterize Top 25% - Bottom 25% of a list and average

    Try

    =LOOKUP(B2,QUARTILE($B$2:$B$51,{0,1,2,3}),{"B","MB","MT","T"})
    or
    =CHOOSE(MATCH(B2,QUARTILE($B$2:$B$51,{0,1,2,3})),"B","MB","MT","T")
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  3. 01-22-2015, 04:28 PM #3
    Eftychia
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    Re: Characterize Top 25% - Bottom 25% of a list and average

    Thanks Ace_XL !

    That was fast!

    It worked just fine!
    Any suggestions about the second part?
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  4. 01-22-2015, 04:33 PM #4
    Ace_XL
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    Re: Characterize Top 25% - Bottom 25% of a list and average

    Aah..I didn't see that all

    Try

    =AVERAGEIF(B2:B51,">"&QUARTILE($B$2:$B$51,3))/AVERAGEIF(B2:B51,"<="&QUARTILE($B$2:$B$51,1))
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  5. 01-22-2015, 04:39 PM #5
    Eftychia
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    Re: Characterize Top 25% - Bottom 25% of a list and average

    You are great!

    Thanks again!!!
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