Use your final model to describe the effects of education, experience, and ethnicity on the wage. Use graphs where appropriate.  Check the data and your final model for possible problems or unusual...

Use your final model to describe the effects of education, experience, and ethnicity on the wage. Use graphs where appropriate.

 Check the data and your final model for possible problems or unusual features by examining the hat diagonals and Cook’s D with the following code. Replace fitLm4 by the name of the lm object for your final model