Question

Find the mean, median, and interquartile for the data set below.

17, 23, 8,5,9,16, 22, 11, 13, 15, 17, 18

Answer 1

The Mean 14.5 and the Median is 15

Explanation:

For the Mean you just add all the numbers up and divide on how many you have. And the Median the middle

Answer 2

Below in bold.

Explanation:

First arrange in ascending order:

5 8 9 11 13 15 16 17 17 18 22 23

Median = mean of the middle 2 values = (15+16)/2 = 15.5.

Mean = Sum of all the values / 12 = 174/12 = 14.5.

Interquartile range = upper quartile - lower quartile = 17 - 11 = 6.