To determine which restaurant has more consistent delivery times, we can calculate the range of delivery times for both restaurants.
Range Calculation: The range is the difference between the maximum and minimum values in a dataset.
Restaurant 1 Delivery Times:
- Data: 40, 37, 40, 41, 38, 46, 41, 37, 40
- Maximum: 46
- Minimum: 37
- Range = Maximum - Minimum = 46 - 37 = 9
Restaurant 2 Delivery Times:
- Data: 42, 38, 37, 39, 38, 40, 42, 41, 40
- Maximum: 42
- Minimum: 37
- Range = Maximum - Minimum = 42 - 37 = 5
Conclusion:
Restaurant 2 has a range of 5 minutes, while Restaurant 1 has a range of 9 minutes. A smaller range indicates more consistency in delivery times.
Therefore, Restaurant 2 is more consistent, because the range of its delivery times is lower than that of Restaurant 1.