First, find the median: 30
Then, find the median of the 2 sides from 30 (Q1 and Q3)
The middle value between 2 and 18 is 9. The middle value between 42 and 81 is 71. Now, just subtract 71-9.
The IQR is 62 :)
The interquartile range of this data set is 79.
The interquartile range is calculated by subtracting the first quartile from the last quartile. IQR = Q3 - Q1.
The interquartile range of this data set 2,5,9,11,18,30,42,48,71,73,81 is;
The interquartile range of this data set is given by;
[tex]\rm Interquartile\ range= First \ Interquartile-Last\ Interquartile\\\\ Interquartile\ range=81-2\\\\ Interquartile\ range=79[/tex]
Hence, the interquartile range of this data set is 79.
Learn more about interquartile range here;
https://brainly.com/question/19065352
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