regression analysis HW

 

The data (X1, X2, X3, X4, X5) are by city.

X1 = death rate per 1000 residents

X2 = doctor availability per 100,000 residents

X3 = hospital availability per 100,000 residents

X4 = annual per capita income in thousands of dollars

X5 = population density people per square mile

Reference: Life In America's Small Cities, by G.S. Thomas

X6=gender where 0-male and 1-female

I need to do the analysis and do the best model

do all needed analysis such as:

-diagnostics needed

-plot the residuals

-plot the cotter plots 

- model reduction 

-Forward and backward selection 

-including the square values 

-do the validation