1. Test Your Guess Guess the Ages

2. Guess the ages of the following famous people 1.Quinten Tarantino 2.Michael Phelps 3.Sean Connery 4.Mike Vick 5.Johnny Depp 6.Barack Obama 7.Denzel Washington 8.Steven Spielberg 9.Mia Hamm 10.Beyonce

3. Guess the ages of the following famous people 11.Nicolas Cage 12.Derek Jeter 13.J.K. Rowling 14.Al Pacino 15.Joe Paterno 16.Ben Roethlisberger 17.O.J. Simpson 18.Will Smith 19.Maria Sharapova 20.Maynard James Keenan

4. Now I will reveal the actual ages…

6. Here are their real ages… 1.Quinten Tarantino45 2.Michael Phelps23 3.Sean Connery78 4.Mike Vick28 5.Johnny Depp45 6.Barack Obama47 7.Denzel Washington53 8.Steven Spielberg61 9.Mia Hamm36 10.Beyonce27

7. Here are their real ages… 11.Nicolas Cage44 12.Derek Jeter34 13.J.K. Rowling43 14.Al Pacino68 15.Joe Paterno81 16.Ben Roethlisberger26 17.O.J. Simpson61 18.Will Smith40 19.Maria Sharapova21 20.Maynard James Keenan44

9. Using your data… 1.Plot the actual (x) vs. your guesses (y) on a scatterplot 2.If you had guessed perfectly, what would have been the equation of your ‘least-squares line of best fit’? 3.Calculate the line of best fit for your data a)What is the response variable? b)What is the explanatory variable? c)What does your model predict? d)Write the equation of the line in context. 4.What was your correlation? Interpret the value. 5.What was your R 2 ? Interpret the value. 6.Look at your residuals [y – (y-hat)]. How well did you guess? 7.Russell Crowe is 44—Using your equation, what would you have guessed for his age (interpolation)?