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Mathematics 24 Online
OpenStudy (swag):

Where is the 1st quartile in this data set? 18, 4, 13, 19, 15, 23, 7, 10, 25, 3, 23

OpenStudy (anonymous):

put the numbers in order.... 3,4,7,10,13,15,18,19,23,23,25 Now find the median (the middle number) which is 15. This is Q2. Q1 is the median of the first numbers before Q2... 3,4,7,10,13 Now what is the median(middle number) of this set of numbers ?

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