Question

This problem uses the UN11 data in the alr4 package. (a) Plot fertility against ppgdp. Fit a linear model regressing fertility on ppgdp and add the fit on the plot. Comment on why this model is not good. (b) Use a ""residuals vs fit"" plot to check if there is any non-constant variance or non-linearity problem. State the main problem and explain why in one or two sentences. (c) Use a normal Q-Q probability plot to check if the normality assumption is met. State the main problem and explain why in one or two sentences.

Answer 1

Ok I didn’t get it but answer is h2o.


Thanks