PSYC 510 HOMEWORK 2 (60 POINTS) Variables and Measures, and Introduction to SPSS
Homework 2 (60 points)
Variables and Measures, and Introduction to SPSS
When submitting this file, be sure the filename includes your full name, course and section. Example: HW2_JohnDoe_510B01
Be sure you have reviewed this module/week’s lesson and presentationsbefore proceeding to thehomework exercises. Fill in the blanks within this homework document.Review the “Homework Instructions: General” document for an example of howhomework assignments must look.
All questions are worth 2 points each unless otherwise stated (Q23 and 24 are 4 pts each).
| Part I: General Concepts
These questions are based on the concepts covered in this week’s assigned readings and presentations. |
| Fill in the blank with the appropriate word or words.
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| 1. | What type of validity has more to do with rapport and public relations than with actual validity? | Answer:
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| 2. | If the reliability coefficient is 0.35, what word is used to describe the strength of the relationship? | Answer:
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| 3. | If describing the relationship between calories consumed and number of pounds lost as “fewer calories consumed is associated with more pounds lost”, would this indicate a positive or a negative correlation? | Answer:
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| 4. | What specific type of criterion validity is used to estimate present performace?
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| 5. | Can a test be reliable but not valid? (Yes or No)
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Which specific scale of measurement has these exact properties: identity, magnitude, and equal unit size | Answer:
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| Indicate for each of the types of reliability listed below whether it measures stability over time, equivalency of items, both of these things, or none of these things.
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| 7. | Test / retest:
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| 8. | Alternate-forms:
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| 9. | Split-half:
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| Identify the scale of measurement (nominal, ordinal, interval, or ratio) for each variable in the following descriptions.
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| 10. | Political party affiliation (circle one):
Democrat Republican Liberatarian Other |
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| 11. | Percent safety rating (scale of 0 – 100%)
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| 12. | Likert question:
How satisfied are you with our service? 1 2 3 4 5 Completely agree Somewhat agree Neutral Somewhat disagree Completely disagree |
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| 13. | Letter grade using the following system:
0 – 59 = F 80 – 89 = B 60 – 69 = D 90 – 100 = A 70 – 79 = C
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| Identify the specific type of self-report measure is being utilized in each scenario:
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| 14. | A questionnaire asking you about your stress levels while enrolled in a graduate level research methods course.
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| 15. | A survey asking how many times you engage in sexual activity per month . | Answer: |
| Many files will be used in this course, and being able to identify the extension will greatly help you in determining what the file is used for and which program you should use to open the file. Match the following files with the expected program based on the information provided.
A. SPSS Data File B. SPSS Output File C. Word Document
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| 16. | Homework1.spo
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| 17. | Homework1.sav
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| 18. | Homework1.doc | Answer: |
| Based on your introduction to SPSS, please answer the following questions.
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| 19. | When you first start the SPSS program, the only window visible on the screen is known as what? | Answer: |
| 20. | In SPSS, what typically represents different variables (rows or columns)?
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| 21. | Output from SPSS analyses appear in a new kind of window called what? | Answer: |
| 22. | You can delete any unnecessary output by clicking on an item in the ______, located on the left side of the Statistics Viewer. | Answer: |
| Part II: SPSS Application
These questions require the use of SPSS. Remember you must submit all of your work within this word document. You will need to take a screen shot of your data view if necessary, or copy and paste your output into the spaces below.
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| 23. | Create a data file and enter the following two variables. Name the variables exactly as shown, making sure to enter the value labels for the Variable “Gender”. Paste a screen-shot of your DATA VIEW in the box provided below. (4 pts)
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| Paste Data View Screen-shot HERE:
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| 24. | As shown in this week’s presentation and described below, run descriptive statistics:
Analyze à Descriptive Statistics à Explore Attendanceà Dependent List Genderà Factor List Select “OK” Once the output is shown, select the “Boxplot” to copy and paste in the box provided. (4 pts)
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| Paste Data View Screen-shot HERE:
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| Part III: Cumulative
These questions can be related to anything covered thus far in the course.
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The average hours of sleep among college students has reduced over the years. Poor sleep has been associated with deficits in attention, reduction in academic performance, impaired driving, risk-taking behaviors,depression, impaired social relationships, and poorer health. It is believed that college students may have limited knowledge about sleep hygiene and the behaviors that supports sleep health, which may lead to poor sleep hygiene behavior (Dietrich et al., 2016).
In this fictitious study examining the effects of sleep education on sleep hygiene, students were randomly assigned to either participate in a formal sleep education program or a control program (on group work). Sleep hygiene behavior was assessed at the conclusion of the study using a self-report Likert-based questionnaire.
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| 25. | What type of research method best describes this scenario (descriptive, predictive, or experimental)?
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| 26. | What is the independent variable?
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| 27.
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What is the dependent variable? | Answer: |
| 28. | What is the scale of measurement of the dependent variable? | Answer: |
Submit Homework 2 by 11:59 p.m. (ET) on Sunday of Module/Week 2. Remember to name file appropriately.
| Done! |
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