Using the "World happiness" dataset, examine and test the relationships between several variables. Provide the R codes in the R-script file under the sub-heading Module 6, and the statistical outputs under the sub-heading "Module 6" in the Word file. In general, your statistical outputs should be titled and labeled so that they can stand on their own (and can be understood by anyone who looks at them for the first time).

1. Using an appropriate variable, create dummy variables to subset your dataset. Then rerun your regression line for your dependent variable. How many subsets did you create? How many lines are there? Create a scatterplot with multiple regression lines. How does this impact your understanding of the impact of the categorical variable on the regression?
2. Using the appropriate subsetted data from step 1, create separate regression lines for each subset. How do these regression lines differ from the regression lines in step 1? How does this method of looking at the data impact your understanding of the data?