1. Guess their age

2. To Do:
Guess the ages of the given celebrities and write this in the 2nd column.
When you are completed write a sentence about what influenced your guess.

3. Actual Ages

4. Tiger Wood-37
Raven Symone-27
Eddie Murphy-52
Daniel Radcliffe-24
Tobey Maguire-38
Barak Obama-52
Oprah Winfrey-59
Beyonce Knowles-32
Johnny Depp-50
Britney Spears-31
Betty White-91
Tom Hanks-57
Mike Krzyzewski-66

5. Scatter Plots

6. Scatter plots Used to show a relationship between data
We always have 2 sets of data
The independent set of data is graphed on the x-axis
The dependent set of data is graphed on the y-axis
Dependent data
Independent data

7. Line of best fit
This line should be close to as many points as possible
Best fit lines can be estimated by choosing two points to create your line
OR they can be found exactly with your calculator….
Put your data into the lists using STAT and EDIT
Find the line of best fit using STAT , CALC, #4 ax+b

8. What you need to know for your test!
How to draw a scatter plot
Label BOTH axis with numbers and units
Determine the line of best fit with your calculator
Create a word problem/story that is realistic and matches your equations
Use units for the x and y
Interpret slope and the y-intercept in the context of your story