Using the depression data set (see Table 3.4), perform a regression analysis of depression, as measured by CESD, on income. Plot the residuals. Does the normality assumption appear to be met? Repeat...

Using the depression data set (see Table 3.4), perform a regression analysis of depression, as measured by CESD, on income. Plot the residuals. Does the normality assumption appear to be met? Repeat using the logarithm of CESD instead of CESD. Is the fit improved?