To find the range of the number of members of the Math Club from 2015 to 2021, you need to determine the minimum and maximum values of the number of members during this time period and then calculate the range by subtracting the minimum value from the maximum value.
The formula for the range is:
\[ \text{Range} = \text{Maximum} - \text{Minimum} \]
Since I cannot see the graph, I can't provide exact numbers. However, you can follow these steps:
- Look at the graph and identify the maximum number of members in any year from 2015 to 2021.
- Identify the minimum number of members in the same period.
- Use the formula above to calculate the range.
If you can provide the maximum and minimum numbers, I can help you calculate the range.