Question: Alcoa has asked you to build a model to explain differences in annual water pollution across countries. The tab Water contains data on water pollution, coal use to generate electricity, coal rents from export, mineral rents from export, and GDP in 41 countries. The 41 include developed nations, the BRICs, emerging countries, and underdeveloped countries. Prior to developing the model, examine the distributions of the quantitative variables. Discuss what you see and what impact there might be on the model. Which potential variables are the most important predictors of water pollution? Coal rents seem to have an effect that is opposite of expectations; what might cause this? (20 points)