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 The current forcast for the cities can also be found at the following addresses:

  • Omaha:
  • Springfield:
  • St. Louis

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 The current forecast for the cities can also be found at the following addresses:

  • Philadelphia:
  • Boston:
  • Bangor:

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 The current forcast for the cities can also be found at the following addresses:

  • Boulder:
  • Los Angles:
  • Salem:

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?