1. Data understanding and regression analysis (30 marks) You should provide a clear discussion on your data checks and data exploration work using appropriate statistical tools. Data wrangling and preprocessing work should be carefully motivated and discussed. Data insights should be clearly communicated. Regressions should be carefully motivated and interpreted. For example, you should explain your choice of regressors in the model, your modelling strategies, or subsamples you have selected for the regression analysis. 2. Quality of the discussion and report (20 marks) The report should be easy to read, have a good flow and structure. It should provide clear insights into the factors that are important for life expectancy. As this is a research brief to be read by technocrats, you may afford to be more technical in the presentation of your research findings in the report