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# Correlation, Regression, and Comparing Means

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Using the data set: Chamorro-Premuzic.sav; you will focus on the variables related to Extroversion and Agreeableness (student and lecturer)

1. Exploratory Data Analysis.

a. Perform Exploratory Data Analysis on all variables in the data set. Because you are going to focus on Extroversion and Agreeableness, be sure to include scatter plots for these combinations of variables (Student Agreeableness/Lecture Agreeableness; Student Extroversion/Lecture Extroversion; Student Agreeableness/Lecture Extroversion; Student Extroversion/Lecture Agreeableness) and include the regression line within the chart.

b. Compose a one to two paragraph write up of the data.

c. Create an APA style table that presents descriptive statistics for the sample.

2. Make a decision about the missing data. How are you going to handle it and why?

3. Correlation. Perform a correlational analysis on the following variables: Student Extroversion, Lecture Extroversion, Student Agreeableness, Lecture Agreeableness.

a. Ensure you handle missing data as you decided above.

b. State if you are using a one or two-tailed test and why.

c. Write up the results in APA style and interpret them.

4. Regression. Calculate a regression that examines whether or not you can predict if a student wants a lecturer to be extroverted using the student's extroversion score.

a. Ensure you handle missing data as you decided above.

b. State if you are using a one or two-tailed test and why.

c. Include diagnostics.

d. Discuss assumptions: are they met?

e. Write up the results in APA style and interpret them.

f. Do these results differ from the correlation results above?

5. Multiple Regression. Calculate a multiple regression that examines whether age, gender, and student's extroversion predict if a student wants the lecturer to be extroverted.

a. Ensure you handle missing data as you decided above.

b. State if you are using a one or two-tailed test and why.

c. Include diagnostics.

d. Discuss assumptions: are they met?

e. Write up the results in APA style and interpret them.

f. Do these results differ from the correlation results above?

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#### Solution Summary

This solution is comprised of a detailed explanation of correlation, regression analysis using SPSS output. This solution mainly discussed above 5 questions using the SPSS software. Full interpretation is provided for all the sub parts of 5 question.

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