1. Line of Best Fit

2. How Much Do They Make? Name Guess the Income Actual Income Lady Gaga
Jay-Z
LeBron James
Oprah Winfrey
Angelina Jolie
Eli Manning
Britney Spears
President Obama

3. Guess the Income (millions) Actual Income (millions)
How Much Do They Make?
Name
Guess the Income (millions)
Actual Income (millions)
Lady Gaga 52
Jay-Z 40
LeBron James
19.7
Oprah Winfrey
315
Angelina Jolie 33
Eli Manning
1.75
Britney Spears 58
President Obama
2.65

4. Actual Income (Millions)
The Right Income
Actual Income (Millions)
Guess the Income (Millions)

5. Types of Correlations

6. Line of Best Fits

7. Provide students with an example on how to write the equation of a line given two points as a review

8. Baltimore Ravens Year Number of Touchdowns 2002 36 2003 41 2004 33
2005 25
2006 38
2007 27
2008 42
2009 47
2010
2011
2012 44

9. Touchdowns by the Baltimore Ravens
Using two points, what is the linear regression equation?
(2, 33) (8, 47)
slope = 7/3
33 = 7/3(2) + B
30.6 = B
Y=7/3X +30.6
Using all the data, what is the linear regression equation?
Y = X
Remember the values of x are 2 and 8 because the x value Year Since 2002

10. Touchdowns by the Baltimore Ravens
What does the slope mean in the context of the problem?
Each season the Ravens will increase the number of touchdowns by 1.18 (or 2.3 depending on the equation).
Based on the equation, how many touchdowns should the Ravens score in the 2013 season?
= 11
y = 1.18(11)+32.36
The Ravens should score about 45 touchdowns for the 2013 season
For GT students, which equation should be used to make predictions in the future? Why did you choose that equation?
Why is one equation better than other?

11. Graphing Calculator Instructions Finding a Linear Regression Equation
Enter all the data points in L1 (the x values) and L2 (the y values)
Press STAT, move the cursor to CALC, press 4, then ENTER

12. Class Work on Linear Regression
Foot Size and Height
1. Using a calculator, determine the equation of linear regression.
If a person is 82in in height, what is his/her shoe size?
If a person has a 10.5 shoe size, how tall would he/she be?
Fast Food Calories & Fat 1. Using a calculator, find the slope and explain it meaning in the context of the problem. 2. If a burger has 40 grams of fat, how many calories will it have?
Height (in) 67 70
73.5 75 78
Shoe Size
8.5
9.5 11 12 13
Fat (g) 9 13 21 30 36 42
Calories 72
100
164
166
208

13. Creating Posters Work in groups of 3 or 4 students
Research and obtain data on a topic that you can make a prediction on
Include:
Title and Description of Data
Scatter plot and Type of Correlation
Linear regression equation
Analysis of the Equation
Prediction using your equation