 ### Weather temperatures

Written by: John Meseke
Last updated by Nicole Steigerwald 2/7/05

-Lesson Overview-  -Weather Activity-

### Overview:

 Purpose: Here is a lesson dealing with current temperatures at certain cities in the U.S. I found this data after browsing through the National Center for Atmospheric Research (NCAR) Subject: Statistics Grade Level : High School Instructional Goal: To calculate range, mean, variance, and standard deviation of certain data sets, and then analyze these calculations. Behavioral Objective: From looking at their answers to the range, mean, variance, and standard deviation, the students will explore reasons for these statistics. Materials: Nationwide observations of temperatures of major cities(three separate data sets-East,Central,West); Microsoft Word; Internet Access How to Access Data: The data sets can be retrieved by using an Internet connections. The addresses for the data sets are given in the assessment activity below. What Data Set Consists of: These data sets consist of the temperature (inFahrenheit) of major cities in the U.S. The cities are separated into three sections, East, Central, and West. How to Use: This data set can be used as statistics for calculating mean, variance, standard deviation, and range. After calculating these statistics the students can analyze certain aspects about the weather of the U.S. on a certain day.

### Weather Activity

This lesson works on calculating range, mean, variance, and standard deviation, and analyzing these calculations. Download the lesson as a Word file here

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

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.

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<>Now look at the current weather forecast for the eastern United States (Philadelphia, PA<>, Boston, MA and Bangor, ME) from the Internet.
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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 forecast for the cities can also be found at the following addresses:

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?