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3. Find the lower quartile for the following data set:7, 9, 13, 4, 18, 3, 9, 10, 15, 8, 2, 6, 90905O 11.5O 7.5O 6.5

1 Answer

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The number of elements in the data is 13.

The lower quartile formula is


(n+1)/(4)th\text{ term}

Hence, the answer is 6.5