Introduction to SPSS for CSUB PC's
Last edited: Sunday, 6 August 2000
Running SPSS is very simple. It requires that you find the SPSS icon
,
then place the mouse arrow pointer on it and click the mouse button rapidly
two times to open SPSS. You can then create a new data file or you can
have SPSS open an SPSS system file. If you are working with an SPSS system
file, a step saving way is to find the system file and click it two times.
SPSS will open and bring in the system file. This tutorial follows the
steps of answering The Research Question with a previously created
SPSS file. If you want to know more about SPSS see the online
SPSS
text. Click below for information on the research question used in
this tutorial, the survey instrument used in the research and to download
the data. This tutorial assumes you have downloaded the zipped data file,
CSUSsp.por,
to a floppy disk and unzipped to the SPSS data file
CSUSsp.por
THE
RESEARCH QUESTION
THE
SURVEY AND SAMPLE INFORMATION
DOWNLOAD
THE ZIPPED DATA CSUSsp.POR for Win PC
(Note: The Data File after unzipping is CSUSsp.por)
| Before starting the tutorial below: (1) Download the zipped data file
[preferably to a floppy] (2) Unzip the downloaded file to get the SPSS
file CSUSsp.POR |
Contents:
1. Starting
an SPSS session
Finding SPSS will depend on where it was installed on the computer you
are using. I will go through the steps at the CSUB computer labs. These
steps will be pretty similar at most installations. If you cannot find
SPSS, you may have to ask which in computers it is installed on your campus.
Starting SPSS on PCs with WINDOWS 95/98 [This is the suggested
start up -- you can also double click the SPSS data file]
-
Click the mouse on the Start button at the bottom left of the screen
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Drag the mouse up to Programs
-
Drag the mouse across to SPSS
-
Click 2 times on the SPSS 9.0 for Windows (other versions
of SPSS may vary slightly from this tutorial), and SPSS will open to the
following dialog box, Figure 1.
Figure 1
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Click beside Open an existing file
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Click OK
-
Be patient! It will take a few minutes but SPSS will open to an Open
file dialog box
Figure 2
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Click the down arrow beside the Files of type box and choose All
files [*.*]
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Find your SPSS data file in the Open file dialog box (you probably
saved it to a floppy) and click the Open button
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2.
Looking at your variables one at a time
We can now look at our chosen variables from the CSUSsp.por file.
SPSS offers a variety of ways to do this including: Frequencies
(with percentages), Descriptives (summary statistics), and Explore
(summary statistics and displays). For this tutorial we will use Frequencies:
Figure 3
-
Drag the Analyze menu to Descriptive Statistics
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Continue your drag across to Frequencies which will appear in a
sub menu box, and release the mouse button. A Frequencies dialog
box will appear (see Figure 4).
Figure 4
-
One at a time find and click the variables on the left you want to examine,
then click the arrow between the boxes to include your variables in the
Variable(s)
list
box, the box on the right. For our example click on V10, our dependent
variable (you may have to scroll to find the variable), then click the
arrow in the middlle of the dialog box to move V10 to the Variable(s)
list
box. Do the same for V2, our independent variable.
| Depending on how SPSS is set up on your computer, the variables could
appear as the name of the variable [v1, v2, v3...] or they will appear
as the variable name [UNIVERSITY, GENDER, AGE...] |
-
We could click the Statistics and Charts button and make
choices, but for our example we will just click OK at the top right
of the dialog box.
-
Frequency distributions are calculated and displayed in an untitled output
window, Figure 5.
Figure 5
-
You can scroll through the output and look at the distribution of our other
variable GENDER, Figure 6.
Figure 6
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3. Exploring
relationships between pairs of variables
We see that the distribution is acceptable for our next step, to examine
the relationships between the two variables. In this case we want to determine
if males or females are more likely to receive financial support from relatives
or friends
-
Drag the Analyze menu again to Descriptive Statistics.
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Continue your drag to Crosstabs.. which will appear in a sub menu
box, Figure 7.
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Release the mouse button and a dialog box will appear, Figure 8.
Figure 7
-
We are going to see if there is a difference between males and females.
The research question we are asking is Are males or females more likely
to receive financial support from relatives or friends. Choose the
row variable which is usually the dependent variable (for our example V10--
Financial Support), then the column variable which usually is the independent
variable. In this case the column variable is gender, V2 (see Figure 8).
Figure 8
-
At the bottom of the dialogue box, click the Statistics button then
choose the appropriate statistics followed with a click of the Continue
button. In this case I choose only Chi-square to test significance,
Figure 9.
Figure 9
-
Again at the bottom of the Crosstabs dialogue, Figure 8
box,
click Cells and make choices for what you want in the cells of your
tables. I chose Observed frequencies (the default) and
Percentages
by Column (Appropriate where the column variable is independent
and the row variable is dependent). Then click Continue on the Cell
Display dialog box (see Figure 10). You will now return to the Crosstabs
dialogue box.
Figure 10
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Click Continue on the Crosstabs dialog box and your table and statistics
will be calculated and displayed in the output window (see Figure 11).
I have just shown the table to illustrate the output but if you are following
along with this on a computer you can use the scroll bar to see the statistics
output.
Figure 11
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4. Printing
output
The Printing process is the same as with other applications.
-
Perform Analyze to produce the output you want on the screen in
the untitled output window
-
Choose Print from the File menu (Figure 12) and a print dialog
box will appear (see Figure 13).
Figure 12
Figure 13
-
Print dialog boxes vary with the type of printer, but all have the following
choices in common:
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5. Moving output
to another program
The following steps move SPSS output to a word-processing document.
(a) Copy the output to the clipboard by:
-
Clicking on one table, statistics or chart object
that you want to put in your report
-
The "object" will be selected with a box appearing around the output you
will be moving, Figure 14 .
-
Choose Copy Object from the Edit menu
Figure 14
(b) Open the application or document into which you will place the
SPSS output. We will paste the output into Microsoft Word.
Word 97
Open your word document or a new blank document, place your cursor where
you want the output to appear.
Choose "Paste Special" from the edit menu
In the "Paste Picture" dialog box that appears click "picture" then click
the OK button. Your SPSS output will be pasted as a picture object.
Change the size of your "picture" by dragging from a corner
Word 2000
-
Open your word document or a new blank document, place your cursor where
you want the output to appear.
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Choose "Paste" from the edit menu
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Change the size of your "picture" by dragging from a corner. Figure 15
Figure 15
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6. Quitting SPSS
If you have been working along with these steps, now is a good time
to take a break. To quit SPSS, choose Quit from the File
menu. Sometimes this will result in a dialog box asking if you want to
save the file. Follow the steps and name and save the file at this point
if you want to save it to your disk. You don't really need to do this if
you have easy access to the data file. Also save and print your document
file and/or quit your word processor.
If you have been following the exercise steps, this completes the SPSS
portion of the exercise. You now need to look at your output, decide its
meaning and write up your report.
SPSS is pretty easy to use. Try some of the other available procedures,
experiment, you can't really hurt anything!
Footnotes
[1] There are other files that may
be opened. They will be listed and require a double click to open.
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