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Chapter 3
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EXAMINING Relationships
S C AT T E R P L O T S, C O R R E L AT I O N, A N D R E G R E S S I O N
Chapter Objectives
Construct and interpret a scatterplot
for a set of bivariate data.
Compute and interpret the
correlation r between to variables.
Demonstrate an understanding of the
basic properties of the correlation r.
This chapter introduces you to the concept of describing the
relationship between two variables using a scatterplot, correlation,
and a regression equation. You will learn how to build a leastsquares regression equation and how to use that equation to predict
values based on an observed relationship.
CHAPTER 3
Scatterplots and
Correlation
Explain the meaning of a least squares
regression line.
Given a bivariate set of data,
construct and interpret a regression
line.
Demonstrate an understanding of
how one measures the quality of a
regression line as a model for
bivariate data.
Correlation and Regression
Wisdom
Explanatory and Response
Variables
Correlation Coefficient, r
Least-Squares Regression
Extrapolation
Outliers
Influential Observations
Lurking Variables
Regression Line
Residuals
Residual Plot
Coefficient of
Determination
MON
TUE
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16 Sect 3.2
• Using the Least
Squares Regression
Line
• Residual Plots
Read 3.1-3.2, Worksheet 3.33, 3.35-3.38
22 Sect 3.3
23 Review
• Extrapolation
• Influential Points
Case Closed
Case Closed
FRAPPY
3.81, 3,86
WED
10 Sect 3.1
• Scatterplots
• Explanatory and
Response Variables
3.1-3.5, 3.7, 3.9
17 Quiz
Quiz 3.1-3,2
Practice Worksheet
24 Chapter Exam
Chapter 3 Exam
Online Quiz Due
THU
11 Sect 3.1
• Correlation
FRI
12 Sect 3.2
• Least-Squares
Regression
3.13-3.14, 3.16, 3.20
18 No School
3.29-3.32
19 No School
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Examining Relationships
AP S
CHA TATS
PTER
3
Essential Questions
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“
You can only predict things after they’ve happened.” - Eugene Ionesco