SPSS ASSIGNMENT #3
Computing z-Scores Using SPSS
Using the data below:
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Determine the z-score that corresponds to each teacher’s salary and enter them in the table below. (Follow the steps on the second page).
The following data are from a survey of high school teachers.
|
SALARY |
SEX |
ZSALARY |
|
35,000 |
Male |
|
|
18,000 |
Female |
|
|
20,000 |
Male |
|
|
50,000 |
Female |
|
|
38,000 |
Male |
|
|
20,000 |
Female |
|
|
75,000 |
Male |
|
|
40,000 |
Female |
|
|
30,000 |
Male |
|
|
22,000 |
Female |
|
|
23,000 |
Male |
|
|
45,000 |
Female |
|
Follow the instructions below. For salary be sure to use “scale” for measure (and you will be entering the actual number so no need for values); sex is a nominal variable (Male= 1, Female=2).
In SPSS, we compute z-scores via the Descriptives command.
After you enter the data above, click Analyze, then Descriptive Statistics, then Descriptives – this will take you to the dialog box for descriptives.
In the bottom-left corner you will see a check box labeled “Save standardized values as variables”, check this box and move the variable SALARY into the right-hand blank. Then click OK to complete the analysis. You will see the standard output from the Descriptives command. Notice that the z-scores are not listed. SPSS inserts them into the data window as a new variable (ZSALARY). Copy and paste your results to this document.
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Write a brief (but thorough) analysis of what these z-scores say about each teacher’s salary.
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