# What is the interquartile range for this set of data? 11, 19, 35, 42, 60, 72, 80, 85, 88

##### 1 Answer

Jun 30, 2017

See a solution process below:

(From: http://www.statisticshowto.com/probability-and-statistics/interquartile-range/)

#### Explanation:

This data set is already sorted. So, first, we need to find the median:

Next we put parenthesis around the upper and lower half of the data set:

Next, we find Q1 and Q3, or in other words, the median of the upper half and lower half of the data set:

Now, we subtract