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

Answer 1

@phi

Answer 2

what's the definition of inter-quartile range ?

Answer 3

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

Answer 4

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

Answer 5

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

Answer 6

k 25.5

Answer 7

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

Answer 8

17

30

Answer 9

subtract to find the interquartile range

Answer 10

13

Answer 11

thanks