Estimating Age

Write down the age of each of the following Write down the age of each of the following people in the people in the x x column on your paper. column on your paper.

Make your best guess! Make your best guess!

Tiger Woods

Oprah Winfrey

Michael Jordan

Steve Carell

John Grisham

President Obama

Ringo Starr

Cameron Diaz

Tom Cruise

Serena Williams

Nelson Mandella

Garth Brooks

George W. Bush

Taylor Swift

Kanye West

Robert Pattinson

Lady Gaga

Derek Jeter

Miley Cyrus

Nick Jonas

How well did you estimate?

Write down the actual age of each of Write down the actual age of each of these personalities in the these personalities in the y y column on column on

your paper. your paper.

Actual Ages

Tiger Woods – 33 -- December 30, 1975Tiger Woods – 33 -- December 30, 1975 Oprah Winfrey – 55 -- January 24, 1954Oprah Winfrey – 55 -- January 24, 1954 Michael Jordan – 46 -- February 17, 1963Michael Jordan – 46 -- February 17, 1963 Steve Carell – 47 -- April 16, 1962Steve Carell – 47 -- April 16, 1962 Brad Pitt -- 46 -- December 18, 1963Brad Pitt -- 46 -- December 18, 1963 John Grisham --54-- February 8, 1955John Grisham --54-- February 8, 1955 President Obama – 48-- August 4, 1961President Obama – 48-- August 4, 1961

Actual Ages

Ringo Starr – 69 -- July 7, 1940Ringo Starr – 69 -- July 7, 1940 Cameron Diaz – 37-- August 30, 1972Cameron Diaz – 37-- August 30, 1972 Tom Cruise -- 47 -- July 3, 1962Tom Cruise -- 47 -- July 3, 1962 Serena Williams – 28-- September 26, 1981Serena Williams – 28-- September 26, 1981

Nelson Mandella -- 91 -- July 18, 1918Nelson Mandella -- 91 -- July 18, 1918 Garth Brooks -- 47 -- February 7, 1962Garth Brooks -- 47 -- February 7, 1962 George W. Bush -- 63 -- George W. Bush -- 63 -- July 6, 1946

Actual Ages

Taylor Swift – 19 -- Dec. 13, 1989Taylor Swift – 19 -- Dec. 13, 1989 Kanye West – 32 -- June 8, 1977Kanye West – 32 -- June 8, 1977 Robert Pattinson – 23 -- May 13, 1986Robert Pattinson – 23 -- May 13, 1986 Lady Gaga – 23 -- March 28, 1986Lady Gaga – 23 -- March 28, 1986

Derek Jeter – 35 -- June 26, 1974Derek Jeter – 35 -- June 26, 1974 Miley Cyrus – 17 -- November 23, 1992Miley Cyrus – 17 -- November 23, 1992 Nick Jonas – 17 -- Sept 16, 1992Nick Jonas – 17 -- Sept 16, 1992

Scatter Plot

Draw a scatter plot of your guesses and actual age for each celebrity.

x = your guess

y = actual age

Remember to label the x and y axis and title the graph!

Scatter Plot

What observations can be made about the What observations can be made about the scatter plot?scatter plot?

What would the scatter plot look like if you What would the scatter plot look like if you guessed all of the ages correctly?guessed all of the ages correctly?

Comparing our Guesses

What would out line look like if we guessed everyone’s age correctly??

Plot that line on your scatter plot

Analyze Data

What do we know about data points that What do we know about data points that were plotted below our were plotted below our y = xy = x line? line?

What do we know about data points that What do we know about data points that were plotted above our were plotted above our y = xy = x line? line?

What if our points lie on the line?What if our points lie on the line? How accurate were you compared to your How accurate were you compared to your

partner?partner?

HOMEWORK

Come up with Come up with 3 more3 more celebrities to add to my celebrities to add to my list.list.

You must provide their name and birthday You must provide their name and birthday (including year)(including year)

They can be young, old, or even fictional as They can be young, old, or even fictional as long as they have an “age” to guess. long as they have an “age” to guess.