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    When calculating the median from a histogram some of the MEI papers use the (n+1)/2 th value where as others use the n/2 th value! When should I use each one and is there a rule as I can't find one in the textbook or online?
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    (Original post by Fugro123)
    When calculating the median from a histogram some of the MEI papers use the (n+1)/2 th value where as others use the n/2 th value! When should I use each one and is there a rule as I can't find one in the textbook or online?
    I believe it is to do with when n is even or odd. If n is even, use n/2, if n is odd, use (n+1)/2.

    Alternatively, use n/2 all the time, but in the case where this value is not an integer (ie, n is odd), take the ceiling (ie, round up to the next integer so 15.5 goes to 16 etc).

    Hope that helps!
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    Thank you very much! Would hate to loose a mark or two off something so small!


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    (Original post by Fugro123)
    Thank you very much! Would hate to loose a mark or two off something so small!


    Posted from TSR Mobile
    No problem! Good luck to you!
 
 
 
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