Answer :
Given :
- a set of data of the change of amount of water.
To find :
Solution :
To find the range, firstly we will arrange the data in ascending order and then deduct the lowest value from the highest one.
- -2.5, -1.9 ,-1.1 ,-0.4 , 0.2 , 0.9 , 1.5 , 1.8 , 2.5 , 2.8
- Lowest data : 2.8
- Highest data : -2.5
- Range : [ 2.8 - (2.5) ] gallons
- Range : 5.3 gallons
Thus, the range in the change of the amount of water is 5.3 gallons.
