Epidemiology is about the understanding of disease. development and the methods used to uncover the etiology, progression, and treatment of the disease. . Information (data) is collected to investigate a question.
Real estate sales agents make an average salary of about $53,140, which is in the middle of the pack for business jobs. They make less than less than sales representatives, who bring in $64,670.
How Realtors Make Money. Realtors make money on commission: They only get paid when they sell a house or help someone buy a house. The standard Realtor commission in the United States is between 5 and 6 percent, which is evenly split between the seller's agent and the buyer's agent [source: Linden ].he average salary of Realtors doesn't change that much between hot and cold markets [source: Goolsby ]. That's because in hot markets, the profession is flooded with real estate agents who think they can make a quick buck. With so many agents in the field, it limits how many homes any individual agent can sell.