1. Describe when you would use a simple linear regression and when you would use a Pearson correlation coefficient. Provide your own examples of each (do not use examples from the module). (1 mark) 2. What are residuals? How do they relate to the least squares method? (1 mark) 3. What is machine learning? Explain how machine learning relates to the correlations and regression analyses covered in Module 06. (2 marks) 4. What is the replication crisis? Why is it important to consider in health sciences research? (1 mark)