Question

What is the interquartile range of this data?

6

7

8

9

Answer 1

33 - 25 = 8
answer is C. 8 third choice

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Answer 2

The interquartile range of this data is:

8

Explanation:

From the box plot given to us we see that:

Minimum value of the set is: 18

The first quartile or the lower quartile of the set i.e.
`Q_1=25`

The middle quartile or the median of the set i.e.
`Q_2=28`

The upper quartile or third quartile i.e.
`Q_3=33`

Maximum value of the set is: 42

Hence, the interquartile range of the data is:

`IQR=Q_3-Q_1\\\\\\IQR=33-25\\\\IQR=8`

Hence, the interquartile range is: 8