To find the median daily high temperature for each city, we first need to arrange the temperatures in ascending order:
Dayton: 77, 79, 82, 85, 85, 86, 87, 88, 90, 91
Laredo: 79, 80, 81, 82, 84, 86, 87, 88, 88, 92
Next, we find the middle value:
For Dayton: Median = 86
For Laredo: Median = 86
Since both cities have the same median daily high temperature of 86°F, the correct answer is:
Dayton has a higher median daily high temperature than Laredo by 0°F.