Answer:
The range of given data set is 90.
Step-by-step explanation:
We are given the following data:
20.9, 33.1, 21.8, 58.5, 23.5, 110.9, 30.4, 24.9, 74.1, 60.3, 40.4, 45.4
When this data is arranged in ascending order, we get:
20.9
, 21.8
, 23.5
, 24.9
, 30.4
, 33.1
, 40.4
, 45.4
, 58.5
, 60.3
, 74.1
, 110.9
Range is a measure of dispersion and can be easily calculated.
Formula:


Thus, the range of given data set is 90.