To find the range of the number of park visitors, you need to subtract the smallest number of visitors from the largest number.
From the data you provided:
- The smallest number of visitors is 100.
- The largest number of visitors is 350.
Now, calculate the range:
\[ \text{Range} = \text{Largest} - \text{Smallest} = 350 - 100 = 250 \]
The range of the number of park visitors each day is 250 visitors.