Answer:
11
Explanation:
The range of a data set is the difference between the maximum and minimum values in the set. To find the range of the given data set: 18, 20, 22, 11, 19, 18, 18, you would follow these steps:
1. Find the maximum value: In this case, the maximum value is 22.
2. Find the minimum value: In this case, the minimum value is 11.
3. Calculate the range: Range = Maximum value - Minimum value
Range = 22 - 11 = 11
Therefore, the range of the given data set is 11.