Question

How do you find the median of 15,8,19,21,18,17 ? Thanks

Answer 1

17.5

Explanation:

The median is the value that separates the higher half from the bottom half of the data sample (middle value).

We have

15, 8, 19, 21, 18, 17

Write from the smallest to the largest number

8, 15, 17, 18, 19, 21

We have an even number of numbers. Therefore we calculate the arithmetic mean of the two middle numbers:

8, 15, 17, 18, 19, 21

(17 + 18) : 2 = 35 : 2 = 17.5

Answer 2

median = 17.5

Explanation:

The median is the middle value of a data set arranged in ascending order. If there is not a middle value then the median is the average value of the numbers either side of the middle.

Data in ascending order is

8, 15, 17, 18, 19, 21

The median is between 17 and 18, hence

median =
`(17+18)/(2)` = 17.5