Regression

BA501 : The Class : Stats : Regression
Regression Analysis

§ Assignments and Activities §

Regression analysis is used primarily for predictive purposes. The result of the least squares method of simple regression is an estimated equation based on a sample. Statistics generated from a sample (the intercept and slope of the regression equation) are used as estimates of parameters in the population. Hypotheses tests are used to draw conclusions about the a claimed values for the populations parameters. Confidence intervals are used to attempt to quantify the populations parameters within a range of possible values. Analysis of variance is used to determine the coefficient of determination as a measure of the strength of the regression equation.

Objectives:

1. Study textbook and on-line material for a general understanding of regression analysis.

2. Interpret the estimated coefficients using the conceptual formaulae.

3. Calculate the estimated coefficients using the computing formulae and Excel.

4. Use the 5-step method of hypothesis testing to test two-tailed and one-tail hypotheses concerning the population slope (b₁).

5. Calculate and interpret the coefficient of determination using analysis of variance.

Thought for Today

Use Virtual Conference Center to post questions to help each other solve problems and do assignments. Click on the Communications button above for instructions on your username and password. See the

class calendar for announcements and assignments.

To complete this Topic successfully, please complete the following activities in the order shown below:

Text TEXTBOOK READING: Read Chapter 14 in Kvanli, et. al.

Optional and free on-line texts for statistics: HyperStat and StatSoft

ON-LINE LESSON 1: Regression: Introduction

ON-LINE LESSON 2: Regression: Examples

SPREADSHEET: Excel and Equations

ASSIGNMENT: Home Work

Look here before beginning quiz if using a telephone modem.

SELF TEST: Practice Quiz

Visit this Web site, click on the features which apply to regression and other topics of interest.

WEB ACTIVITY: StatSoft

Use WebMail to send attachments and/or messages. Put BA501 (last name) Assignment name and number somewhere in the "subject" line of your e-mail. Address to BA501@mail.cba.nau.edu

WebMail

In addition to the material available at this web site, you may (optional) use WebTutor linked to WebCT. WebTutor is an interactive web site specfically covering the contents of the Kvanli (statistics) textbook assigned in this course. There is a fee for using this web site ($15). Have a credit card ready and click here to sign up for this feature. When you have paid for WebTutor, you may click here to logon. You may download a free student guide to WebTutor by clicking here and then selelcting Student Support.

Once you have completed the activities in this topic you should:

Take midterm exam and then go to module 2 (link below)

Go on to module 2 Production Operation Management
or
Go back to Statistics

Please reference "BA501 (your last name) Assignment name and number" in the subject line of either below.

E-mail Dr. James V. Pinto at BA501@mail.cba.nau.edu
or call (928) 523-7356. Use WebMail for attachments.