Both readings speaks of income. How income distribution is use to determine the social class structure by separating the public into classes: lower, working, upper, and upper-middle class. Reading 4.1 goes into more details about how wealth, power and culture are all aspects of our lives.
I live in Long Island and work in Brooklyn, the closest Subway station to my home is the E and J to Jamaica Center-Parson/Archer avenue and according to the article the social class that lives in my neighborhood are working class making $37.184 which doesn’t surprise me at all because going to work and coming home no matter the time I mostly see working class citizens on the train.
The pattern I see is that most people that lives in the Manhattan area are either upper class or upper- middle class but if you venture out around Washington heights or Harlem you will see a difference in class, those areas are mostly medium to low income households.