Look at the current weather forecast for the central United States (Omaha, NE, Springfield, IL and St Louis,
MO) from the Internet.
You can use The Weather Channel site located at www.weather.com. The current forcast for the cities can
also be found at the following addresses:



Omaha: http://www.weather.com/weather/local/USNE0363?from=search_city
Springfield: http://www.weather.com/weather/local/USIL1114?from=search_city
St. Louis http://www.weather.com/weather/local/USMO0787?from=search_city
We are going to be working with Fahrenheit.
1. What city has the highest temperature reading so far for today?
2. What is this temperature?
3. What city has the lowest temperature so far?
4. What is this temperature?
5. What is the range of the temperatures of the central U.S.?
6. Find the mean of these temperatures.
7. Find the variance of these temperatures.
8. What is the standard deviation?
9. Based on your results, is there much variation in the current mean temperature of the central U.S.?
Explain your answer.
Now look at the current weather forecast for the eastern United States (Philadelphia, PA, Boston, MA and
Bangor, ME) from the Internet.
You can use The Weather Channel site located at www.weather.com. The current forecast for the cities can
also be found at the following addresses:



Philadelphia: http://www.weather.com/weather/local/USPA1276?from=search_city
Boston: http://www.weather.com/weather/local/USMA0046?from=search_city
Bangor: http://www.weather.com/weather/local/USME0017?from=search_city
10. What city has the highest temperature reading so far for today?
11. What is this temperature?
12. What city has the lowest temperature so far?
13. What is this temperature?
14. What is the range of the temperatures of the eastern U.S.?
15. Find the mean of these temperatures.
16. Find the variance of these temperatures.
17. What is the standard deviation?
18. Based on your results, is there much variation in the current mean temperature of the eastern U.S.?
Explain your answer.
Now look at the current weather forecast for the eastern United States (Boulder, CO, Los Angeles, CA and
Salem, OR) from the Internet.
You can use The Weather Channel site located at www.weather.com. The current forcast for the cities can
also be found at the following addresses:



Boulder: http://www.weather.com/weather/local/USCO0038?from=search_city
Los Angles: http://www.weather.com/weather/local/USCA0638?from=search_city
Salem: http://www.weather.com/weather/local/USOR0304?from=search_city
19. What city has the highest temperature reading so far for today?
20. What is this temperature?
21. What city has the lowest temperature so far?
22. What is this temperature?
23. What is the range of the temperatures of the western U.S.?
24. Find the mean of these temperatures.
25. Find the variance of these temperatures.
26. What is the standard deviation?
27. Based on your results, is there much variation in the current mean temperature of the western U.S.?
Explain your answer.
Now let's look at our answers from the three sections of the U.S.
28. On average, which is the warmest section of the U.S.? Why do you think this section is the warmest?
Why are the other sections cooler?
29. Which section of the U.S. has the most variation in the weather? What could account for this?
30. Which section has the least amount of variation? What could account for this?