For the data set 7, 12, 15, 18, 20, the range is ________.

Question Analysis
This question tests the student's ability to calculate the range of a given data set.

Key Concept Explanation
The range is a measure of dispersion that indicates the spread of the data by finding the difference between the maximum and minimum values.

Step-by-step Solution
1. Identify the maximum value in the data set (20).
2. Identify the minimum value in the data set (7).
3. Subtract th...