Archive for September, 2006

Create an overall variable / rating from a number of ratings / variables

This week Cameron send us the following question:

“I am writing about the stereotypes that people hold in regard to public service employees. Participants are required to rate a private, state, federal and local employee on a number of ratings such as efficiency. It is a 7 point Likert scale.

How do I obtain an overall rating score for each participant for each level of employee?”

Cameron, I assume you have already got your data into SPSS. I also assume you have put each score in a different variable and scored every variable with a figure from 1 to 7. To create an overall rating, you can use the Compute function. You can find this under Transform -> Compute.

Compute
(Click image for large view)

  • In the field Target Variable, you fill in the name of a (new) variable which should contain the overall rating.
  • In the field Numeric Expression you create a formula by typing or clicking the right buttons, like the following:

(var1+var2+var3+var4)/4

  • In this formula the 4 stands for the number of variables.
  • When you are finished, press OK.

In the newly created variable you can now find the overall score. If you have any questions about SPSS, please do not hesitate to contact us.

1 comment September 29th, 2006 andris

How to export your charts in high resolution

We got a question from Lucinda, who wants to publish her results, but has a problem with the resolution of the output. She asked us:

“I have made some interactive line graphs that have been submitted to a scientific journal for publication. The journal editor says that the resolution of the graphs is not high enough to print. Do you know how I can increase the resolution of the graphs?”

You can export your graphs into different file formats:

1. Rightclick your chart (in the Output window)

2. Choose Eport, which gives you the following pop-up screen:

Export Output

3. Set the file type to Postscript (EPS). This is the file format most graphical guys (DTP-ers) can handle this format without a problem. Set the other options according to your wishes, and press OK.

If you have any other questions, please don’t hesitate to contact us.

5 comments September 19th, 2006 andris


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