Question

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

Answer 1

The number of elements in the data is 13.

The lower quartile formula is

$\frac{n+1}{4}th\text{ term}$

Hence, the answer is 6.5