Conducting a Regression Analysis Using Raw Data

Conducting a Regression Analysis Using Raw Data

Plotting Residuals

Create a Residual Plot from this table

1. Enter data into list and spreadsheets

2. Insert a data and statistics page

3. Press menu-4-6-2

4. Press menu-4-7-2

Now you have a residual plot!

Multiple Choice

What is the residual when x=2

• 1

• -1

• 1.75

• -1.75

Multiple Choice

What is the residual value when x=4

• 2.143

• -2

• -2.143

• 4

Using the table, create another residual plot

Multiple Choice

What is the residual value when birth=26

• 61

• -6.81

• -61

• 3

Multiple Choice

What is the residual value when birth=42

• .3

• 1

• -2

• 45

Multiple Choice

What is the least squares regression line for our data? Choose the most correct answer

• life expectancy = 105.37 + 1.44 x birthrate

• y = 105.34 + 1.44x

• birth rate = 105.37 + 1.44 x life expectancy

• y = 1.44+ 105.34x