For a symmetric distribution (where the median equals the midhinge, the average of the first and third quartiles), half the IQR equals the median absolute deviation (MAD). The median is the corresponding measure of central tendency. Identification of outliers (see below).
SLM Corporation (commonly known as Sallie Mae; originally the Student Loan Marketing Association) is a publicly traded U.S. corporation that provides consumer banking. Its nature has changed dramatically since it was set up in 1973. At first, it was a government entity that serviced federal education loans.
Sallie Mae acts as administrator for student loans from both the Federal government and private lending organizations. Students looking to secure a college loan should apply for Federal financial aid programs first. Federal loans offer the best terms, lowest interest rates and most attractive repayment policies. Sallie Mae administers both of the primary Federal loan programs, the Stafford and the Perkins loan programs.