Math 104

March 14, 2005

SPSS Assignment 4 (due March 18)

Do these “data analysis” problems from Chapter 5 of the SPSS text (pages 97-98):

Problem 11, parts abcd (Use the “salbeg” variable in “salary.sav”. Skip the comparison

to problem 6a, and skip part e).

Also: What is the IQR for this variable?

(It’s a one-step calculation from your answer to part d.)

Problem 12, parts a and b (only).

Problem 16, all parts (a, b, c, d, e). Use variables “chol58” and “dbp58” from “electic.sav”.

Report your results in the form of a word-processor document.

HINTS AND SUGGESTIONS

For problem 11, parts a and b, it isn’t necessary to print (or copy) two histograms. Answer the question in part a, but wait and show the histogram after making the changes in part b.

Recall how to edit a histogram: Create it in the usual way, so that it appears in your output file. Then, double-click on the graphic itself. The edit window gives you many wonderful powers; you should spend some time experimenting and make the histogram look as pretty and informative as you can. Finally, close the edit window — the histogram in the output file should now reflect the edits.

You can make SPSS do all the work for you on problem 16, parts abcd — have SPSS print out a “descriptives” table for the standardized variables. Part e probably requires calculations by hand. You’ll need the average and SD of the “dbp58” variable, but maybe you can find them in the output you produced for part d.

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