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Question

Find the inter quartile range (IQR) of the data plotted in the given box and whisker plot.


A
26
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B
36
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C
32
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D
10
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Solution

The correct option is D 10
In a box plot ,


the box is drawn from the first quartile to the third quartile and the vertical line inside the box indicates the median.

From the given plot, we get


Lower quartile = 26

Median = 32

Upper quartile = 36

Inter quartile Range (IQR ) = Upper quartile - Lower quartile

IQR = 36 - 26 = 10

Hence, IQR of the given data = 10

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