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    In the same textbook i have there are two conflicting pieces of notes, i dont understand!!
    1. It says to find the median you use the n+1/2 th value
    and then later it says you must use here the n/2 value
    and same for the upper and lower quartiles 3n/2 etc
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    (Original post by jonny sss)
    In the same textbook i have there are two conflicting pieces of notes, i dont understand!!
    1. It says to find the median you use the n+1/2 th value
    and then later it says you must use here the n/2 value
    and same for the upper and lower quartiles 3n/2 etc
    I think it makes a difference whether you have an odd number or even number of data. I.e. n/2 value of 11 values would be the 5.5th so you use (n+1)/2 for an odd number i think.
 
 
 
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