Find the inter-quartile range of the given data set.

3, 16, 18, 25, 26, 29, 31, 50

13

15

47

this is really confusing

Question

Find the inter-quartile range of the given data set.

3, 16, 18, 25, 26, 29, 31, 50



13

15

47


this is really confusing

anonymous · Answer

@phi

phi · Answer

what's the definition of inter-quartile range ?

anonymous · Answer

the difference between the largest and smallest of the middle 50% of the data set

anonymous · Answer

its confusing theres two middle numbers i don't think i'm understading what it means

phi · Answer

First step is find the median.  with an even # of samples, its the average of the two middle values

anonymous · Answer

k 25.5

phi · Answer

next divide the samples into two equal sets, those below the median and those above the median
3, 16, 18, 25
and
26, 29, 31, 50

find the median for each set

anonymous · Answer

17

30

phi · Answer

subtract to find the interquartile range

anonymous · Answer

13

anonymous · Answer

thanks