Question

Calculate the interquartile range for this set of data:

{34, 47, 1, 15, 57, 24, 20, 11, 19, 50, 28, 37}
A) 21
B) 23
C) 25
D) 27

Answer 1

IQR is found my subtracting the 1st quartile from the 3rd quartile.

1st Q: 17
Median (Middle number in data set): 26 
3rd Q: 42

IQR: 42 - 17 = 25

Answer 2

THe answer is 25 :D