The following data shows sizes of shoes worn by eleven form two students.

The following data shows sizes of shoes worn by eleven form two students.
6, 7, 7, 4, 8, 10, 9, 7, 5, 6, 5. Determine the interquartile range of the shoe sizes.

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4, 5, 5, 6, 6, 7, 7, 7, 8, 9, 10

Lower quarter = $\frac{1}{4}(11 + 1)th \ = \ 3rd \ = \ 5$

Upper quarter = $\frac{3}{4}(11 + 1)th \ = \ 9th \ = \ 8 $

Interquartile range = 8 - 5 = 3

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raphael answered the question on January 17, 2017 at 05:11

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