Chapter 12 - Chapter 12 Bivariate Regression Analysis...

Info iconThis preview shows pages 1–7. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 12 1 Chapter 12 Bivariate Regression Analysis
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Chapter 12 2 Looking at relationships between two quantitative variables We create a scatter plot to see if an obvious association, or pattern, exists between the variables. Example: Consider the variables diesel price/gallon and regular unleaded price/ gallon
Background image of page 2
Chapter 12 3 Figure 12.1 page 490 Figure 12.1 page 490
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Chapter 12 4 As with one variable analyses, after creating a picture of the data we then summarize using numbers. Our objective is to quantify the relationship between the two variables. Relationships can take on many different shapes such as: linear, quadratic, or exponential.
Background image of page 4
Chapter 12 5 Let’s focus on linear relationships. Why? Linear relationships are very common. They are simple to see. They are simple to model (y=a+bx).
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
6 Correlation Correlation is the measure that tells us how strong the linear relationship is between two variables. The correlation also tells us in which
Background image of page 6
Image of page 7
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 10/08/2009 for the course BCOR 2200 taught by Professor Tomnelson during the Spring '08 term at Colorado.

Page1 / 15

Chapter 12 - Chapter 12 Bivariate Regression Analysis...

This preview shows document pages 1 - 7. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online