6. Relationship between multiple numerical variables: does salary depend on age and working experience? (30 marks) i. Create a scatter plot between Age and Salary and interpret the graphs (5 marks) ii. Create a scatter plot of Working experience and Salary and interpret the graph (5 marks) iii. Run regressions of Salary on Age, Salary on Working experience, and Salary on Age and Working experience together, respectively (10 marks] iv. Interpret the regression output {10 marks)