Posted: August 11th, 2023

To prepare for this Discussion:
• Review the Learning Resources and the media programs related to t tests.
• Search for and select a quantitative article specific to your discipline and related to t tests. Help with this task may be found in the Course guide and assignment help linked in this week’s Learning Resources. Also, you can use as a guide the Research Design Alignment Table located in this week’s Learning Resources
BY DAY 3
Write a 3- to 5-paragraph critique of the article. In your critique, include responses to the following:
• Which is the research design used by the authors?
• Why did the authors use this t test?
• Do you think it’s the most appropriate choice? Why or why not?
• Did the authors display the data?
• Do the results stand alone? Why or why not?
• Did the authors report effect size? If yes, is this meaningful?
RESOURCES
Required Readings
• Frankfort-Nachmias, C., Leon-Guerrero, A., & Davis, G. (2020). Social statistics for a diverse society (9th ed.). Thousand Oaks, CA: Sage Publications.
o Chapter 8, “Testing Hypothesis” (pp. 243-279)

• Wagner, III, W. E. (2020). Using IBM® SPSS® statistics for research methods and social science statistics (7th ed.). Thousand Oaks, CA: Sage Publications.
o Chapter 6, “Testing Hypotheses Using Means and Cross-Tabulation” (previously read in Week 5)
o Chapter 11, “Editing Output” (previously read in Week 2, 3, and 4)

• Walden University Library. (n.d.). Course Guide and Assignment Help for RSCH 8210Links to an external site.. Retrieved from http://academicguides.waldenu.edu/rsch8210 For help with this week’s research, see this Course Guide and related weekly assignment resources.

• Document: Week 6 t test Scenarios (PDF)Download Week 6 t test Scenarios (PDF)
Use these scenarios to complete this week’s Assignment.

• Document: Walden University: Research Design Alignment Table
Optional Resources
• Klingenberg, B. (2016). Inference for comparing two population means. Retrieved from https://istats.shinyapps.io/2sample_mean/Links to an external site.
Use the following app/weblink to enter your own data and obtain an interactive visual display.

• Skill Builders:
o Research Design and Statistical Design
o Hypothesis Testing for Independent Samples t-test

© 2016 Laureate Education, Inc. Page 1 of 1
Week 6
Scenarios
1. As an international development researcher, you would like to know African Citizen’s
perceptions about current levels of democracy. Your working hypothesis is that a
series of reforms have increased African views of the level of democracy today. You
do not have a good research design to compare attitudes before and after the
reforms, but know that leaders and development experts would like to see a value of
6, on the scale of 1–10. Using the data from the 2015 Afrobarometer, determine
whether perceptions about current levels of democracy statistically differ from a
value of 6. Please provide: a 1–2 APA style paragraph statement that furnishes an
answer to this question, note the relevant statistics, comment on meaningfulness
and include your relevant SPSS output.
2. As an international development researcher, you have already tested whether
perceptions about the current levels of democracy differ from a value of 6. Given
recent social change movements in North Africa, you now want to determine
whether there is a statistical difference in these perceptions between North Africa
and Southern Africa. Using the data from the 2015 Afrobarometer, please provide: a
1–2 APA style paragraph statement that furnishes an answer to this question, note
the relevant statistics, comment on meaningfulness, and include your relevant SPSS
output.
3. As an educational researcher, would like to know whether high school student’s
perceptions about mathematical utility changed between their freshman and senior
year. Each respondent is asked the same series of questions about the utility of
mathematics in their future during their freshman and senior year. These questions
are combined to form one variable of mathematical utility; higher values indicate
higher levels of mathematical utility. Using the High School Longitudinal Survey,
please provide: a 1–2 APA style paragraph statement that furnishes an answer to
this question, note the relevant statistics, comment on meaningfulness, and include
your relevant SPSS output.

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