1. ©Evergreen Public Schools 2010 1 12/3/2010 Compare Boxplots

2. ©Evergreen Public Schools 2010 2 Learning Target I can use appropriate summary statistics to compare and describe sets of data and write a conclusion from the data. What can you compare two sets of data?

3. ©Evergreen Public Schools 2010 3 LaunchLaunch How many characters messages were in the last message you sent? We ask students in Mr. Sauter’s 3 rd period class this question. We also asked teachers this question. What is a question we might ask that can be answered by looking at a graph of both sets of data?

4. ©Evergreen Public Schools 2010 4 ExploreExplore

5. 5 What is an outlier? What do you think? An outlier is an observation that lies outside the overall pattern of a distribution (Moore and McCabe 1999).

6. ©Evergreen Public Schools 2010 6 What is an outlier? Do there appear to be any outliers in Mr. Sauter’s class? If so, how many are there? What are the outliers?

7. ©Evergreen Public Schools 2010 7 What is an outlier? Read about the “Inner Quartile Range” from the book The Cartoon Guide to Statistics by Gonick and Smith.

8. ©Evergreen Public Schools 2010 8 What is an outlier? Use patty paper to trace the inner quartile range, or IQR. Draw 1.5 times the IQR.

9. ©Evergreen Public Schools 2010 9 What is an outlier? Use the method described in the excerpt you read to determine if there are any outliers in Mr. Sauter’s class. If so, how many are there? What are the outliers? You can also use the histogram if it helps you.

10. ©Evergreen Public Schools 2010 10 What is an outlier? Were you right? A boxplot that shows outliers is called a modified boxplot.

11. ©Evergreen Public Schools 2010 11 Students and Teachers What is a question we might ask that can be answered by looking at a graph of both sets of data?

12. ©Evergreen Public Schools 2010 12 Students and Teachers Answer your question. What else does the graph tell you?

13. ©Evergreen Public Schools 2010 13 Team Practice What does the graph tell you? How does this compare to the histograms?

14. ©Evergreen Public Schools 2010 14 Debrief What can you look for when you compare two boxplots?

15. ©Evergreen Public Schools 2010 15 5 3 1 2 4 Learning Target Did you hit the target? I can use appropriate summary statistics to compare and describe sets of data and write a conclusion from the data. Rate your understanding of the target from 1 to 5.

16. ©Evergreen Public Schools 2010 16 Practice Practice 9.6A Compare Boxplots