To determine the median daily high temperatures for Dayton and Laredo, we first need to organize the temperatures for each city in ascending order:
Dayton temperatures:
77, 79, 82, 85, 85, 86, 87, 88, 90, 91
In sorted order:
77, 79, 82, 85, 85, 86, 87, 88, 90, 91
Laredo temperatures:
79, 80, 81, 82, 84, 86, 87, 88, 88, 92
In sorted order:
79, 80, 81, 82, 84, 86, 87, 88, 88, 92
Now, we find the median for each set of temperatures. Since both sets contain 10 numbers, the median will be the average of the 5th and 6th values.
Finding median for Dayton:
- 5th value: 85
- 6th value: 86
- Median for Dayton: \( \frac{85 + 86}{2} = \frac{171}{2} = 85.5 \)
Finding median for Laredo:
- 5th value: 84
- 6th value: 86
- Median for Laredo: \( \frac{84 + 86}{2} = \frac{170}{2} = 85 \)
Summary of medians:
- Median for Dayton: 85.5 °F
- Median for Laredo: 85 °F
Now, to find out which city has a higher median and the difference:
- Dayton's median (85.5 °F) is higher than Laredo's median (85 °F) by \( 85.5 - 85 = 0.5 °F \).
Thus, the correct response is:
Dayton has a higher median daily high temperature than Laredo by 0.5°F.