The Global Attractions Attendance Report is an annual report published by the Themed Entertainment Association. It is an annual attendance study for themed entertainment and museum industries around the world. The following data set includes the total yearly attendance for the top 15 water parks, in millions, during one year. What is the potential outlier? 6 , 7 , 7 , 7 , 8 , 8 , 10 , 10 , 10 , 11 , 11 , 13 , 15 , 16 , 24