RES 342 Week 4

Assignments from the E-Text

Prepare answers to the following assignments from the e-text, Applied Statistics in Business and Economics, by Doane and Seward:

Chapter 15 Chapter Exercises 15.7, and 15.13

Assignments from the E-Text

Prepare answers to the following assignments from the e-text, Applied Statistics in Business and Economics, by Doane and Seward:

Chapter 15 Chapter Exercises 15.18, 15.22, 15.24, and 15.28

Individual Parametric and Nonparametric Data Identification Assignment

Complete the University of Phoenix Material, Parametric and Nonparametric Data Identification Assignment located on your student website.

Learning Team Assignment: Nonparametric Hypothesis Testing Paper

Use the same research question and data from the Learning Team Meeting Two assignment.

Conduct the equivalent, nonparametric test of hypothesis using the five-step process.

Prepare a 1,050- to 1,750-word paper describing the results of the nonparametric hypothesis

test. Include the following in your paper:

Formulate a hypothesis statement regarding your research issue.

Perform the five-step hypothesis test on the data.

Explain which nonparametric test you used to analyze your data and why you chose that

test.

Interpret the results of your test, and explain the differences, if any, that you observe from

your Week Three paper.

Include your raw data tables and the results of your computations in your paper, using

graphical and tabular methods of displaying data and results.

Format your paper consistent with APA guidelines.

Learning Team Regression Paper

Using numerical data from one of the data sets available through the Data Sets link on your student website page, develop one research question and formulate a hypothesis which can be tested with linear regression analysis.

Prepare a 1,050-1,750-word paper describing the results of the linear regression analysis on your collected data. Be sure to include the following in your paper:

Formulate a hypothesis statement regarding your research issue.

Perform a regression hypothesis test on the data.

Interpret the results of your regression hypothesis test.

Be sure to include your raw data tables and the results of your computations in your paper, using both graphical and tabular methods of displaying data and results.

These assignments are due in Week Five.

Individual Assignment: Quiz

Prepare to take a quiz on topics covered in previous weeks.

Discussion Questions

Does correlation equal causation? Does the strength of correlation depend on the direction? What is the meaning of a zero correlation? Explain your answers.

What is the difference between an independent and a dependent variable? Does a regression model imply causation? Why or why not?

What are the requirements that must be met for a regression analysis? What happens if these requirements are violated?

What is multi-collinearity and how does it affects the multi-regression model?

What are the linear relationship between two variables, both the coefficient of determination and the sample correlation coefficient?

Which tests do you like the most? The (Z) test, the (t) test, ANOVA, or the Chi Square. Please explain.