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# MEI Statistics 1 - Median Estimate from Histogram

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1. 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?
2. (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!
3. Thank you very much! Would hate to loose a mark or two off something so small!

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4. (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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