Question

100 POINTS What is the IQR for the data set?

{31, 76, 34, 35, 39, 49, 55}

Drag and drop the correct answer into the box.

IQR

Answer 1

21

Explanation:

Place the numbers in order from smallest to largest:

31, 34, 35, 39, 49, 55, 76

The median (Q2) is the middle value = 39

Q1 is the middle value of the numbers smaller than the median = 34

Q3 is the middle value of the numbers larger than the median = 55

IQR = Q3 - Q1

= 55 - 34

= 21

Answer 2

set : {31, 76, 34, 35, 39, 49, 55}

arrange ascending to descending:

{ 31, 34, 35, 39, 49, 55, 76 }

given,

• first quartile: 34

• third quartile: 55

I.Q.R:

• interquartile range : third quartile - first quartile

• 55 - 34

• 21