Week 4 Assignment: Correlation Application and Interpretation [u04a1] Week 4 Assignment: Correlation Application and Interpretation

Use the Data Analysis and Application template (DAA Template [DOCX]). For help with statistical software, refer to the JASP Step-by-Step: Correlations [PDF] document. View JASP Speedrun: Correlations [Video] Links to an external site. for a brief tutorial video on this assignment. View Deeper Dive Correlation [Video] Links to an external site. for a longer video on how to interpret the statistical software output. Refer to the 7864 Course Study Guide [PDF] for information on analyses and interpretation. For information on the data set, refer to the 7864 Data Set Instructions [PDF] document. The grades.jasp file is a sample data set. The data represent a teacher’s recording of student demographics and performance on quizzes and a final exam across three sections of the course. This data file is used in all four papers (Week 2, Week 4, Week 6, and Week 8). This week’s assignment is on correlations. You will analyze the following variables in the grades.jasp data set: Variable Definition Quiz1 Quiz 1: number of correct answers GPA Previous grade point average Total Total number of points earned in class Final Final exam: number of correct answers Step 1: Write Section 1 of the DAA: The Data Analysis Plan Name the four variables used in this analysis and whether they are categorical or continuous. State a research question, null hypothesis, and alternate hypothesis for total and final. State a research question, null hypothesis, and alternate hypothesis for gpa and quiz1. Step 2: Write Section 2 of the DAA: Testing Assumptions Test for one of the assumptions of correlation – normality. Create a descriptive statistics table in statistical software to assess normality. This table should include the four variables named above, including skew and kurtosis for each variable. Paste the table in the DAA Template. Interpret the skewness and kurtosis values and determine whether the assumption of normality was violated or not violated. Step 3: Write Section 3 of the DAA: Results and Interpretation Using the statistical software, paste the intercorrelation matrix for the four variables into the document. Below the output, first report the total-final correlation including degrees of freedom, correlation coefficient, and p value. Specify whether or not to reject the null hypothesis for this correlation. Second, report the gpa-quiz1 correlation including degrees of freedom, correlation coefficient, and p value. Specify whether or not to reject the null hypothesis for this correlation. Step 4: Write Section 4 of the DAA: Statistical Conclusions Provide a brief summary of your analysis and the conclusions drawn about correlations. Analyze the limitations of the statistical test and/or possible alternative explanations for your results. Step 5: Write Section 5 of the DAA: Application Analyze how you might use correlations in your field of study. Name two variables that would work for such an analysis and why studying the relationship may be important to the field or practice. Submit your DAA template as an attached Word document in the assignment area.