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.
1 What is the average annual salary for Real Estate Sales Agent?  How much does a Real Estate Sales Agent make? The median annual Real Estate Sales Agent salary is $39,456, as of July 29, 2016, with a range usually between $38,545-$50,188, however this can vary widely depending on a variety of factors.