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Calculate First and Third quartiles

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Important info.:

In the ordered data set,

the 2nd position = 7.72
the 3rd position = 7.8
the 7th position = 7.97
the 8th position = 8.06.

There are 9 data points in all.

(a) Find the first quartile
(b) Find the third quartile

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Solution Summary

The solution shows how to calculate the first and third quartiles. Although not all of the data is presented, enough information is given in order to perform all of the necessary calculations.

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With 9 data points, Q1 is position 2.5 and Q3 is position 7.5.

(a) Q1 being the 2.5 position is simply the average ...

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