Answer:
9
Explanation:
IQR is the length of the box
To start, take the max of the box (which is 15)
And then subtract the min of the box (which is 6)
15-6=9
9 is the IQR
The interquartile range (IQR) is the box plot showing the middle 50% of scores and can be calculated by subtracting the lower quartile from the upper quartile (e.g. Q3−Q1).
Look at the picture below to get a better understanding:
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