Explores repeated-measures analysis techniques with verified solutions.
Benjamin White
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BTM8107-8Week 6 Apply Repeated-MeasuresCorrectAnswersActivity #6 consists of two parts. In the first part, you will utilize an existing dataset to analyze thedataset from repeated-measures experimental design. All SPSS output should be pastedinto your Worddocument. In the second part, you will be asked to create a dataset for a hypothetical repeated-measures experimental design. Finally, you will answer questions about your hypothetical dataset.Part A. SPSS ActivityThe “Activity 6.sav” file contains a dataset of a high school teacher interested in determining whether hisstudents’ test scores increase over the course of a 12 week period. In the dataset, you will find thefollowing variables:Participant: unique identifierGender: Male (M) or Female (F)Score_0–score on the initial course pre-test (first day of class)Score_2–score at the end of week 2Score_4–score at the end of week 4Score_6–score at the end of week 6Score_8–score at the end of week 8Score_10–score at theend of week 10Score_12–score at the end of the course (week 12)To complete this Activity1. Exploratory Data Analysis.a. Perform exploratory data analysis on the relevant variables in the dataset. When possible, includeappropriate graphs to help illustrate the dataset.b. Compose a one to two paragraph write up ofthe data.c. Create an APA style table that presents descriptive statistics for the sample.2. Repeated-Measures ANOVA. Perform a repeated-measures ANOVA using the “Activity 6.sav” data set.You will use Score_0 throughScore_12 as your repeated measure (7levels), and gender as a fixed factor.a. Is the assumption of sphericity violated? How can you tell? What does this mean in the context ofinterpreting the results?b. Is there a main effect of gender? If so, explain the effect. Use post hoc tests when necessary orexplain why they are not required in this specific case.c. Is there a main effect time (i.e., an increase in scores from Week 0 to Week 12)? If so, explain theeffect. Use post hoc tests when necessary or explain why they are not required in this specific case.Examine the output carefully and give as much detail as possible in your findings.d. Write up the results in APA style and interpret them. Be sure that you discuss both main effects andthe presence/absence of an interaction between thetwo.Part B. Applying Analytical Strategies to an Area of Research Interest3. Briefly restate your research area of interest.a. Identify at least 2 variables for which you would utilize a repeated-measures ANOVA in your analysis.Describe the variablesand their scale of measurement. Identify whether each factor is fixed or repeating.Where on the SPSS output would you look to find out if you violated the assumption of sphericity? If thedata did violate this assumption, what would the impact be on youranalysis?
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