Guess the Celebrities’ Heights!

Part I – Guided Practice

When you are told to begin, you will estimate the height (in inches) of each celebrity in the “Estimated Height” column. When finished, these answers are not to be changed after you have entered each celebrity’s actual height.

Estimated Actual Estimated Actual CELEBRITY CELEBRITY Height Height Height Height

Lebron James Venus Williams

Barack Obama Selena Gomez

Manny Pacquiao Dwight Howard

Beyonce' Knowles Miley Cyrus

BJ Penn Lil' Wayne

Leonardo DiCaprio Jay-Z

Tiger Woods Morgan Freeman Shakira

Create a scatter plot below to graph the heights above. Each ordered pair will show the estimated height as the input on the x-axis, and the actual height as the output on the y-axis, forming an ordered pair. You should have fifteen ordered pairs graphed in all.

Note: Be sure that intervals on each axis are labeled and even.

1. Does your scatter plot have correlation? How do you know?

Part II – Independent Practice

Group Actual Group Actual CELEBRITY CELEBRITY Estimate Height Estimate Height

Lebron James Venus Williams

Barack Obama Selena Gomez

Manny Pacquiao Dwight Howard Beyonce' Knowles Miley Cyrus

BJ Penn Lil' Wayne Leonardo DiCaprio Jay-Z

Tiger Woods Morgan Freeman

Shakira

Using the second scatter plot with the class’s mean estimates, answer the following questions independently.

1. What type of correlation does the scatter plot have? How do you know?

2. Is the correlation stronger or weaker than that on the first scatter plot? Explain your answer.

3. What would have happened if you estimated correctly for all celebrities? Describe how your scatter plot would have appeared using words or a picture.