Problem Set 2.8: Calculating z Scores in SPSS

Criterion: Calculate z scores using SPSS.

Data: The following is a list of how senior citizens rated the Internet on a 1-10 scale, with 1 being "really distrust it" and 10 "completely trust it": 8, 9, 4, 6, 8, 5, 1, 9, 7, 6.

Instructions: Complete the following steps:

a.Enter the data into SPSS using the variable name Rating.

b.In the Toolbar, click Analyze, select Descriptive Statistics, and then select Descriptives.

c.Select Ratings and then click Arrow to send data over to the right side of the table. Check the box Save Standardized Values as Variables.

d.Select Options, check the boxes Mean and Standard Deviation, and then deselect all other boxes. Click Continue.

e.Click OK and then copy and paste the descriptive statistics table below.

f.Go to the Data View in SPSS. You will see that the z scores have been added to the file. Paste a screenshot of the Data View, showing the z scores, into this Word document.

Answer: Which number of ratings is closest to the z score of 0?

Descriptive Statistics

N

Mean

Std. Deviation

VAR00001

10

6.3000

2.49666

Valid N (listwise)

10

*Untitled3 [DataSet2] - IBM SPSS Statistics Data Editor 0 X File Edit View Data Transform Analyze Graphs Utilities Extensions Window Help E H A 1 11 : Rating Visible: 2 of 2 Variables Rating ZRating var var var var var var var var var 8.00 68091 2 9.00 1.08144 W 4.00 -.92123 6.00 -. 12016 8.00 68091 6 5.00 -.52069 1.00 -2.12283 9.00 1.08144 CO 7.00 28037 10 6.00 -. 12016 11 12 13 14 15 1 Data View Variable View IBM SPSS Statistics Processor is ready Unicode:ON