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.
Real estate is an incredibly competitive business where very few Realtors are likely to get rich. In 2006, the middle 50 percent of real estate agents earned between $26,790 and $65,270 a year in the United States [source: Bureau of Labor Statistics]. The average salary of Realtors doesn't change that much between hot and cold markets [source: Goolsby].