What other items do you think need to be included in Dr. Zak’s domain sampling? Dr. Zak developed a test to measure depression.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 10CYU
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1.     What other items do you think need to be included in Dr. Zak’s domain sampling?

Dr. Zak developed a test to measure depression. He sampled 100 university students to take his five item test. The group of students was comprised of 30 men and 70 women. In this group, four persons were African American, six persons were Hispanic, and one person was Asian. Zak’s Miraculous Test of Depression is printed below:  

1.     I feel depressed:                                                          Yes      No  

2.     I have been sad for the last two weeks:                          Yes      No   3.     I have seen changes in my eating and sleeping:             Yes      No   4.     I don’t feel that life is going to get better:                        Yes      No   5.     I feel happy most of the day:                                         Yes      No  

Yes = 1; No = 0  

The mean on this test is 3.5 with a standard deviation of .5

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