1. Age Game
Updated July 2016

2. Today’s Objectives
Collect and organize data in order to create a model.
Make predictions using a linear model.
Understand the meaning of the slope & y-intercept of your data.

3. Your Guess
Fill in the table under the column labeled “Estimated Age (e)” with your guesses for the ages of the following people.

4. Taylor Swift

5. Drake

6. Barack Obama

7. Flo Rida

8. Justin Timberlake

9. Ellen Degeneres

10. Willie Nelson

11. Cristiano Ronaldo

12. Iggy Pop

13. Lin-Manuel Miranda

14. Christopher Walken

15. The Actual Ages Are…. Taylor Swift-26 Drake-29 Barack Obama-54
Flo Rida-36
Justin Timberlake-35
Ellen Degeneres-58
Willie Nelson-83
Cristiano Ronaldo-31
Iggy Pop-69
Lin-Manuel Miranda-36
Christopher Walken-73

16. Graph
Now make a scatter plot of your points on graph paper. (x, y) = (estimated age, actual age) Make sure to label your axes!

17. Discussion Questions How well did you guess?
How do you think we could judge if you are a good guesser?
How do you think we could tell if you are an “over” guesser?
How do you think we could tell if you are an “under” guesser?

18. Trend Line
Use a ruler to draw a trend line through two points on your graph. Draw the trend line with a marker.

19. Linear Regression
Find the equation that best fit your data. Use this equation to answer the questions on the handout.

20. Walk around and see what everyone else came up with!
Who is the better guesser?
Who is more of an “under” guesser? How can you tell?
Who is more of an “over” guesser? How can you tell?

21. Perfect Guess Line
Use a different map color to draw a line representing a perfect guess.
Then write a sentence to describe the perfect guess line and translate to symbols.
Discuss with your group.