Signature:
_______________________________________________

Obtain a copy of the SPSS data needed for this
project by opening the SPSS data file named *PTSD*,
which is available from the college network L: drive, BUT which you may have
already previously saved in your personal folder on the college network.

In your personal folder on the college network,
create a Word document named *PTSD* (or
you may use any other word processor besides Word, such as LaTeX)
with the following heading:

**Math 214 Project**

**YOUR**** NAME**

After familiarizing yourself with the data
(described in the **DATA FILE 5** section of the textbook appendix),
identify the two qualitative variables in the data which have more than two
categories. In the first paragraph of
your *PTSD* document, describe how you
would add indicator (dummy) variables to the SPSS data file so that there is
one indicator (dummy) variable corresponding to each category of each of the
two qualitative variables having more than two categories. Then add these dummy variables to your *PTSD* SPSS data file.

Use the **Analyze> Descriptive Statistics>
Frequencies** options in SPSS to see the range of values entered for each
variable and to assess the number of missing values in the data. In the second paragraph of your *PTSD* document, discuss what the range of
values for each of the five quantitative variables is, and how these compare
with what is stated in the description in the textbook appendix. In the third paragraph of your *PTSD* document, discuss what the coded
values for each qualitative variable are, and how these compare with what is
stated in the description in the textbook appendix.

The variable *Health*
(Overall Physical Health) will be treated as the dependent variable, and all
other variables will be considered potential independent variables (i.e.,
predictor variables). For each of the
four potential quantitative independent variables, create a scatterplot of that
variable and the dependent variable *Health*. In the fourth paragraph of your *PTSD* document, discuss how each of these
potential independent variables appears to be related to the dependent
variable.

**Submit
a printed copy of your SPSS output together with your first four paragraphs by Monday
April 18.**

Use the **Analyze> Regression> Linear**
options in SPSS to create a normal probability plot and a residual plot from a
regression with all possible potential predictors in the model. In the fifth paragraph of your *PTSD* document, discuss the normality and
linearity assumptions.

Use the Stepwise Regression procedure in SPSS to see
which predictors are selected for the linear regression model. In the remaining paragraphs of your *PTSD* document, write the results of the
stepwise regression using the format that we have used in previous exercises,
and at the end of your document write the least squares regression equation.

**Submit
a printed copy of your SPSS output together with your remaining paragraphs by Wednesday
April 20.**

**The
final version of the project is due Friday April 22.**