2. 11/22/2010 ©Evergreen Public Schools 2010 1 Guessing Ages Teacher Notes Have fun today! Slide 13 asks you to give students your age. Purpose Recall how to graph a scatter plot Identify independent and dependent variables of a data set. Learn how to identify, understand, and apply an understanding the correlation in a scatter plot: positive vs. negative and strong vs. weak.

3. ©Evergreen Public Schools 2010 2 LaunchLaunch You are going to guess ages of famous people. How could you determine who at your table is the best guesser?

4. ©Evergreen Public Schools 2010 3 Learning Target Linear Models Target 2a I can describe the correlation of data in scatter plots in terms of strong or weak, and positive or negative. Write one math word you already know. Write one math word you expect to learn in this lesson.

5. ©Evergreen Public Schools 2010 4 ExploreExplore

6. 5 Guessing Ages Hillary Clinton Rob Pattinson Alana Thompson Nicki Minaj LaMarcus Aldrige How old is … ?

7. ©Evergreen Public Schools 2010 6 Guessing Ages Teacher’s Choice Samuel L Jackson Jennifer Lawrence Channing Tatum Hugh Jackman How old is … ?

8. ©Evergreen Public Schools 2010 7 Guessing Ages The Actual Ages

9. ©Evergreen Public Schools 2010 8 Hillary Clinton 65

10. ©Evergreen Public Schools 2010 9 Rob Pattinson 26

11. ©Evergreen Public Schools 2010 10 Alana Thompson 8 Honey Boo Boo

12. ©Evergreen Public Schools 2010 11 Nicki Minaj 30

13. ©Evergreen Public Schools 2010 12 LaMarcus Aldridge 27

14. ©Evergreen Public Schools 2010 13 Teacher’s Choice __

15. ©Evergreen Public Schools 2010 14 Samuel L Jackson 63

16. ©Evergreen Public Schools 2010 15 Jennifer Lawrence 22

17. ©Evergreen Public Schools 2010 16 Channing Tatum 32

18. ©Evergreen Public Schools 2010 17 Hugh Jackman 44

19. ©Evergreen Public Schools 2010 18 Make a prediction Based on the information in your table, who in your group is the best guesser? Guessing Ages

20. ©Evergreen Public Schools 2010 19 Make a scatter plot Which variable should go on the x -axis? Why? This is the independent variable. Which variable should go on the y -axis? Why? This is the dependent variable. What does a scatter plot need? Guessing Ages

21. ©Evergreen Public Schools 2010 20 What do you think the word correlation means? If you’re not sure, what do you think this word means? Look for a part of the word you recognize. Does it look like any words you know? Describing Correlation

22. ©Evergreen Public Schools 2010 21 Describing Correlation

23. ©Evergreen Public Schools 2010 22 Describing Correlation Let’s share. Who has a graph with a strong correlation? Who has a graph with a weak correlation? Who has a graph with no correlation? Now, look at your Guessing Ages Scatter Plot

24. ©Evergreen Public Schools 2010 23 Debrief What do you think a perfect guesser’s scatter plot would look like? Best Guesser How can you determine who is the better guesser using the: table? scatter plot?

25. ©Evergreen Public Schools 2010 24 5 3 1 2 4 Learning Target Did you hit the target? I can describe the correlation of data in scatter plots in terms of strong or weak, and positive or negative. Rate your understanding of the target from 1 to 5. 5 is a bullseye!

26. ©Evergreen Public Schools 2010 25 What would it mean about the guesser, if their scatter plot had a Strong Negative correlation?