Image source: http://www.nacorp.com/NAC/images/newspaper.gif
Newspapers and other media often report the arithmetic mean when reporting
averages, such as test scores, income, opinions, medical tests, and budgets.
Image source: http://ittimes.ucdavis.edu/jan2001/gymnast.jpg
The arithmetic mean is used to determine a gymnast's or ice skater's score
in a competition. After the highest and lowest scores are dropped (in case of
bias), the final score is the arithmetic mean of the remaining judges' scores.