Preparation
Read the Assessment 2 Context document (linked in the Resources under the Required Resources heading) to learn about the concepts used in this assessment. This assessment contains two parts. Follow the instructions provided for each part. Submit both parts of your assessment as Word documents.
Part 1: Interpreting Correlations
A meta-analysis (Anderson & Bushman 2001) reported that the average correlation between time spent playing video games (X) and engaging in aggressive behavior (Y) in a set of 21 well-controlled experimental studies wasr+ = .19. This correlation was judged to be statistically significant. In your own words what can you say about the nature of the relationship? Write a one-page response to this question.
Part 2: Correlations
You will use the following resources for this assessment. They are linked in the Resources under the Required Resources heading.
You will analyze the following variables in thegrades.savdata set:
Step 1: Write Section 1 of the DAA
Provide a context of thegrades.savdata set. Include a definition of the specified variables and corresponding scales of measurement. Indicate the type of correlation for each X Y pair (for example Pearson’sr Spearman’sr point-biserialr et cetera). Specify the sample size of the data set.
Step 2: Write Section 2 of the DAA
Test the assumptions of correlation forgpaandfinal. Paste the SPSS histogram output for each variable and discuss your visual interpretations. Paste SPSS descriptives output showing skewness and kurtosis values and interpret them. Paste SPSS scatter plot output with gpa set to the horizontal axis and final set to the vertical axis. Conduct a visual inspection of the scatter plot to analyze other assumptions of correlation. Summarize whether or not the assumptions of correlation are met.
Step 3: Write Section 3 of the DAA
Specify a research question related togpaandfinal. Articulate the null hypothesis and alternative hypothesis. Specify your alpha level.
Step 4: Write Section 4 of the DAA
Paste the SPSS output of the intercorrelation matrix for all specified variables.
Step 5: Write Section 5 of the DAA
Discuss the implications of this correlation as it relates to the research question. Conclude with an analysis of the strengths and limitations of correlational analysis.
Reference
Anderson C. A. & Bushman B. J. (2001). Effects of violent video games on aggressive behavior aggressive cognition aggressive affect physiological arousal and prosocial behavior: A meta-analytic review of the scientific literature.Psychological Science12(5) 353359.