Answer:
interquartile range (IQR) = 18
Step-by-step explanation:
steps to find the interquartile range are as follows:
arrange the data in ascending order:
3, 3, 4, 5, 9, 12, 18, 20, 22, 24, 25
calculate the median:
3, 3, 4, 5, 9, 12, 18, 20, 22, 24, 25
12
calculate the lower quartile:
3, 3, 4, 5, 9
4
calculate the upper quartile:
18, 20, 22, 24, 25
22
thus,
interquartile range (IQR) = upper quartile - lower quartile
= 22 - 4 = 18
