This definition probably doesnt help. Also learn the facts to easily understand math glossary with fun math worksheet online at SplashLearn. The central tendency of a collection of numbers which is a sum of the numbers divided by the amount of numbers the collection.
So you can look at it in a different way.
Mathematical symbols play a major role in this. Equal by definition equal by definition. All the values that go into a function. The values of c and k must be fixed for the function f and must not depend on n.