Question

Use the following data set to answer the question below.8 12 15 9 1012 12 18 14 1510 11 12 9 17What is the median for the data set? (Round your answer to the nearest tenth, ifnecessary.)

Answer 1

The median of a data set is the number in the middle of a list when the data set is ordered from smallest to largest.

To find the median, list the numbers from least to greatest value:

`8,9,9,10,10,11,12,12,12,12,14,15,15,17,18`

The list has 15 elements, then, the element in the middle of the list is the number:

`(15-1)/(2)=(14)/(2)=7\text{ th}`

The 7th element of the list is 12.

Therefore, the median of the data set is 12.