Chapter 3 Examining Relationships

This chapter introduces methods of describing, evaluating, and predicting a relationship between two variables. We are extending our look into Chapter 15 as well.

The test is Monday over Chapter 3 and Chapter 15. Most of the emphasis is on Chapter 3. How could you prove that you know the material?

Due FRIDAY, 10/24: Create detailed written instructions for finding r, the LSRL, residuals, s, and SEof b, performing the hypothesis test for a slope, and for finding the confidence interval for a slope.

15.6 and 15.8 from the text.

Due Wednesday, 10/22: Find 4 examples of regression output using a computer program in the text. For each one, construct null and alternate hypotheses for inferences about the slope of the LSRL, perform the calculations related to your hypotheses, and write out the conclusion in the context of the problem. We are ignoring for now the assumptions/conditions portion of the required steps in inference. All of this must be written on paper-not on your calculator or stored in your heads.

Due Tuesday, 10/14: Translate the definitions from Chapter 15 into language you understand more easily.

Due Monday 10/13: Problems .33, .34, .38, .39, .43, .44, .45. Problems 3.29-3.32 were due Thursday, 10/9.
Due 10/6: Become experts. It's up to you, now. Become able to calculate r, b, a, and the residuals in tables quickly and efficiently. Y'all need to practice so you are fluent!
It boils down to becoming experts in the same thing we've done on the calculator, Fathom, and Excel for 3 days. You could ue a data set from an example in the book and rework it until it is second nature.

Due 10/3: Work 2 challenging problems from the first section that you haven't already worked to PROVE that you are an expert on correlation.

10/1: Looked at data and linear relationships using Fathom. Become an expert on the first section of chapter 3 (3.1).

HW due Wednesday, 10/1: 3.13, .17, .19, .20, .23, .24, .28

Homework for 9/29: familiarize yourself with the correlation and regression applet on the textbook website.
http://bcs.whfreeman.com/tps3e/


HW due 9/26: Problems 3.5 and 3.6 from the text. Problem 3.5 involves one of my favorite relationships: manatee deaths cause powerboat registrations.

HW due 9/25: Be prepared to generate a linear model to solve the copier repair problem and defend your choice of variables.

HW due 9/24: Create an annotated outline of the chapter (include vocabulary and formulas and where you found them). This should take about 2 pages.