STAT 1350: Elementary Statistics
Lab Activity #11
Name(s)_________________________
Graphs :Boxplots-Graphing Calculator
Date ___________________________


Boxplots: Do women peak earlier than men in their acting career?

Boxplots are a very useful graph for comparing the same variable between
strata of a population. Look at the data given in below. Can you give a
conclusive answer to the question stated above by examining the raw data?


Oscar Data - Ages of Best Actors and Actresses

|Year of Award|Best Actress |Age |Best Actor |Age |
|1990 |Kathy Bates |42 |Jeremy Irons |42 |
|1991 |Jodie Foster |29 |Anthony Hopkins |54 |
|1992 |Emma Thompson |33 |Al Pacino |52 |
|1993 |Holly Hunter |35 |Tom Hanks |37 |
|1994 |Jessica Lange |45 |Tom Hanks |38 |
|1995 |Susan Sarandon |49 |Nicholas Cage |31 |
|1996 |Frances McDormand |39 |Geoffrey Rush |33 |
|1997 |Helen Hunt |34 |Jack Nicholson |60 |
|1998 |Gwyneth Paltrow |26 |Roberto Benigni |46 |
|1999 |Hillary Swank |25 |Kevin Spacey |40 |
|2000 |Julia Roberts |33 |Russell Crowe |36 |
|2001 |Halle Berry |35 |Denzel Washington |47 |
|2002 |Nicole Kidman |35 |Adrien Brody |29 |
|2003 |Charlize Theron |28 |Sean Penn |43 |
|2004 |Hillary Swank |30 |Jamie Foxx |37 |
|2005 |Reese Witherspoon |30 |Philip Seymour Hoffman|38 |
|2006 |Helen Mirren |60 |Forest Whitaker |44 |
|2007 |Marion Cotillard |32 |Daniel Day-Lewis |50 |
|2008 |Kate Winslet |33 |Sean Penn |48 |
|2009 |Sandra Bullock |45 |Jeff Bridges |60 |
|2010 |Natalie Portman |29 |Colin Firth |50 |
|2011 |Meryl Streep |62 |Jean Dujardin |39 |
|2012 |Jennifer Lawrence |22 |Daniel Day-Lewis |55 |


Examining raw data does not provide much information to us easily or
readily. In this activity you will use stem and leaf plots and your TI
graphing calculator to aid you in creating boxplots to help you answer the
question: Do women peak earlier than men in their acting career?

1. First we will make back-to-back stem and leaf plots. The stems for
the back-to-back stem and leaf plot are listed in the middle and are
bolded so they are easier to identify. The leaves for one set of data
are listed left of the stems and the leaves for the other set of data
are listed to the right of the stems. You will also notice that there
are two stems for the twenties, two stems for the thirties and so on.
Dividing the decades allows us to create more classes and see the
shape of the data more clearly. The first stem of the decade contains
the leaves 0 through 4. The second stem of the decade contains the
leaves 5 through 9. So the first stem of 2 contains the values 20-24
while the second stem of 2 contains the values 25-29. This same
pattern applies to all the decades listed in the stem and leaf.



The leaves for the actresses' ages have been entered on the left.
Enter the actors' ages to the right of the

stems.



Ages of Actresses Ages of Actors

| | | |
| |categorical or quantitative |Pie chart Bar chart |
| | |Histogram |
| | |Boxplot Stem and Leaf |
| |categorical or quantitative |Pie chart Bar chart |
| | |Histogram |
| | |Boxplot Stem and Leaf |
| |categorical or quantitative |Pie chart Bar chart |
| | |Histogram |
| | |Boxplot Stem and Leaf |


Some Pie Charts of the variables you listed are given below. Match each
Pie Chart to the variable it describes.


[pic]

Circle answer:

Gender Name

Age Year

Justify:

[pic]

Circle answer:

Gender Name

Age Year

Justify: