Question

In a recent survey, 8 people were each asked the number of times they have been on an airplane. Here is a list of the responses.

25, 14, 9, 20, 16, 8, 12, 8

Find the range of the data set.

Answer 1

17

Explanation:

Range is the difference of the highest and lowest number in the data set

Answer 2

The range is 17

Explanation:

First order the data from least to greatest.

25, 14, 9, 20, 16, 8, 12, 8

↓

8, 8, 9, 12, 14, 16, 20, 25

Now the range R is defined as the difference between the highest and the lowest value of the data set:

Once the data is ordered from least to greatest, it can be clearly seen that the highest value is 25 and the lowest value is 8. Then the R is:

`R=25-8\\\\R=17`