If you do not take any action, you will be defaulted into the Non-tobacco User Surcharge. rate. This is a self reported status, so you should take action to indicate your tobacco. user status, if applicable.
Definition of statistic for English Language Learners. : 1  a number that represents a piece of information (such as information about how often something is done, how common something is, etc.) 2  statistics : a type of mathematics that deals with the study of statistics.
A statistician or mathematician would use the terms mean and average to refer to the sum of all values divided by the total number of values, what you have called the average. This especially true if you have a list of numbers.