To find the median daily high temperature for each city, we need to arrange the temperatures in order from lowest to highest and find the middle value.
For Dayton, the temperatures in order from lowest to highest are:
77, 79, 82, 85, 85, 86, 87, 88, 90, 91
The middle value is the average of the two middle numbers, which are 86 and 87:
Median daily high temperature in Dayton = (86 + 87) / 2 = 86.5°F
For Laredo, the temperatures in order from lowest to highest are:
79, 80, 81, 82, 84, 86, 87, 88, 88, 92
The middle value is 86:
Median daily high temperature in Laredo = 86°F
Since 86.5 is greater than 86, Dayton has a higher median daily high temperature than Laredo.
The difference between the median daily high temperatures for Dayton and Laredo is:
86.5 - 86 = 0.5°F
Therefore, Dayton's median daily high temperature is higher than Laredo's by 0.5°F.