This week you have explored three different approaches to t tests. By this point, you know that each test has assumptions about the data and type of research questions it can answer. For this Assignment, you will be provided with three scenarios. As you read the scenarios, be sure and think about aligning the appropriate t test with the question. Consider whether the data are independent samples and if two samples are being compared.

To prepare for this Assignment:

Review the Learning Resources and the media programs related to t tests.

For additional support, review the Skill Builder: Research Design and Statistical Design and the Skill Builder: Hypothesis Testing for Independent Samples t-test, which you can find by navigating back to your Blackboard Course Home Page. From there, locate the Skill Builder link in the left navigation pane.

Also, review the t test scenarios found in this week’s Learning Resources and consider the three different approaches of t tests:

Independent sample t test

Paired sample t test

One sample t test

Based on each of the three research scenarios provided, open the High School Longitudinal Study dataset or the Afrobarometer dataset from this week’s Learning Resources using SPSS software, then choose and run the appropriate t test.

Once you perform your t test analyses, review Chapter 11 of the Wagner text to understand how to copy and paste your output into your Word document.

For this Assignment:

Write a 3-paragraph analysis of your t test results for each research scenario and include the SPSS syntax and output. If you are using the Afrobarometer Dataset, report the mean of Q1 (Age). If you are using the HS Long Survey Dataset, report the mean of X1SES. Do not forget to evaluate if the t test assumptions are met, justify the selection of type of t test, and report the effect size. Based on your results, provide an explanation of what the implications of social change might be.

Use proper APA format, citations, and referencing for your analysis, research questions, and output.

Required Readings

Frankfort-Nachmias, C., Leon-Guerrero, A., & Davis, G. (2020). Social statistics for a diverse society (9th ed.). Thousand Oaks, CA: Sage Publications.

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.

Chapter 6, “Testing Hypotheses Using Means and Cross-Tabulation” (previously read in Week 5)

Chapter 11, “Editing Output” (previously read in Week 2, 3, and 4)

Walden University Library. (n.d.). Course Guide and Assignment Help for RSCH 8210. 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)

Use these scenarios to complete this week’s Assignment.

MUST BE APA WRITTEN

TURN IT IN REQUIRED

MUST ANSWER ALL REQUIRED QUESTIONS

Research Design and Statistical Design

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Hypothesis Testing for Independent Samples t-test

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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.

Research Design and Statistical Design

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Hypothesis Testing for Independent Samples t

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Research Design and Statistical Design

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Hypothesis Testing for Independent Samples t-test

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