# Preliminary Examination Statistical Methods

The Department of Statistics at Western Michigan University students should review the following preliminary exam information.

## Taking the exam

This preliminary exam will be a take home exam. For the exam you:

• Will be allowed two weeks to complete the assignment.
• Will be required to sign a document stating the work completed on this preliminary exam assignment was conducted independently. Any violation of this policy will result in a failure for this attempt.
• May not seek or receive help from any another person.
• May use your class notes, books, research articles and any statistical software deemed necessary to solve the problem.

## Courses

The courses for this Methods Preliminary Exam will be selected by you, but pre-approval by the doctoral advisor by the end of April is required. Each exam problem will be selected by an instructor and given to you in an electronic form around the middle of June (please contact the doctoral committee for exact day).

## Exam content

The exam consists of two problems (one for each of the two methods courses selected). Although the instructor has the discretion to make changes to this rule if necessary.

For each problem, you will be given a data set with some questions to answer.

You are required to write a report for each of the problems. The report does not need to be extensive but will be graded on how well it incorporates the following components:

### Introduction

This is a brief introduction to the problem, history and genesis of the problem or data.

### Statistical analysis

This section is essentially a restatement of the posed questions along with a description of how you plan to address these questions. For example, you will determine what tests, models or software will be utilized. You can, and probably should, comment on the appropriateness of the chosen analysis.

### Results

This section is a write-up of the findings. Answers to the questions need to be given in terms of the context of the problem with supporting p-values, descriptive statistics, appropriate graphs, but no SAS/R/Minitab output.

### Conclusion

Short summary of the problem and major findings. Similar to what is done in a regular paper.

### Appendix

The appendix contains the actual computer output that was used to write up the results section. Only output used to make conclusions should be included. You should include enough output so that an independent statistician (i.e. the faculty member grading) can easily look at the output and determine whether or not you are interpreting the output correctly.

## Submission

The completed assignment should be submitted to the instructors in the agreed upon format and submitted as required by fax or email.