For homework, open the infmort data from the faraway package. Read the online documentation for this data set (do a web search, or type ?infmort at the R prompt after loading the faraway package). Use R to find a simple model for the infant mortality rate in terms of the other variables. Watch out for outliers and influential observations, (you know ways of detecting these) and definitely check and correct for any model assumptions that might not hold (e.g., homoskedasticity). Make plenty of graphs, and be sure to interpret your model by explaining what your regression parameters mean in layman's terms. If you make any kind of transformation, be sure to explain how your final model should be interpreted