(Data file: UN11) Identify the localities corresponding to the poorly fitting points in and explain what these localities have in common. 3.2 Added-variable plots (Data file: UN11) This problem uses...

(Data file: UN11) Identify the localities corresponding to the poorly fitting points in and explain what these localities have in common.

3.2 Added-variable plots (Data file: UN11) This problem uses the United Nations example in Section 3.1 to demonstrate many of the properties of added-variable plots. This problem is based on the mean function fertility log(ppgdp)  +  pctUrban. There is nothing special about a two-predictor regression mean function, but we are using this case for simplicity.