This is the main part of your assessment. You must carry out a complete data analysis framework, based on the lectures and tutorials you have attended. Follow the guidance provided in the lectures and tutorials to perform data preparation and generate a clean version of the dataset. For descriptive analysis, you need to describe your data in detail, using visualizations such as histograms and scatter or density plots as appropriate. This will help you answer the question 'what happened?$\text{'}$ For Diagnostic Analysis, you need to answer the question 'why?$\text{'}$ A regression analysis based on a scatterplot can be used for this purpose. Please support your analysis with appropriate graphs. Finally, based on your analysis, provide a sensible recommendation.